Space Calendar

2019
[ Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec ]

2020
[ Jan | Feb | Mar | Apr ]

Welcome to the Space Calendar!

Created in 1994, this Space Calendar covers space-related activities and anniversaries for the coming year. Included are over 5,500 links to related websites. This Calendar is compiled and maintained by Ron Baalke. Please send any updates or corrections to baalke@zagami.jpl.nasa.gov.

• This Month's Contributors to the Space Calendar
  
• Space Calendar Archives (2015, 2016, 2017, 2018, 2019)

Note that launch dates are subject to change at any time. Also, anniversary dates are listed in 5 year increments only.

March 2019

• Mar 10 - Daylight Saving - Set Clock Ahead 1 Hour (United States)
• Mar 10 - Comet 288P At Opposition (2.638 AU)
• Mar 10 -[Apr 09] Apollo Asteroid 2019 GH3 Near-Earth Flyby (0.047 AU)
• Mar 10 - Apollo Asteroid 24761 Ahau Closest Approach To Earth (1.325 AU)
• Mar 10 - Asteroid 14061 Nagincox Closest Approach To Earth (1.607 AU)
• Mar 10 - Asteroid 242516 Lindseystirling Closest Approach To Earth (1.658 AU)
• Mar 10 - Amor Asteroid 6050 Miwablock Closest Approach To Earth (2.044 AU)
• Mar 10 - Amor Asteroid 3271 Ul Closest Approach to Earth (2.210 AU)
• Mar 10 - Amor Asteroid 9950 ESA Closest Approach To Earth (2.755 AU)
• Mar 10-16 - 33rd Rencontres de Physique de La Vallée d'Aoste (LaThuile 2019), La Thuile, Aosta, Italy
• Mar 10-16 - 16th Rubach School on Nuclear Astrophysics, Rubach am Pab Gschutt, Austria
• Mar 11 - Aten Asteroid 2019 EW1 Near-Earth Flyby (0.004 AU)
• Mar 11 - Apollo Asteroid 2019 EL2 Near-Earth Flyby (0.006 AU)
• Mar 11 - Apollo Asteroid 2019 EW2 Near-Earth Flyby (0.009 AU)
• Mar 11 - Apollo Asteroid 2019 DH Near-Earth Flyby (0.020 AU)
• Mar 11 - Apollo Asteroid 2019 CM4 Near-Earth Flyby (0.035 AU)
• Mar 11 - Asteroid 8720 Takamizawa Closest Approach To Earth (2.001 AU)
• Mar 11 - Asteroid 1640 Nemo Closest Approach To Earth (2.080 AU)
• Mar 11 - Lecture: Stellar Surface Brightness Mapping with Starspot Crossing Transits, Ithaca, New York
• Mar 11 - Colloquium: Probing Nuclear Physics with Gravitational Waves via Universal Relations for Neutron Stars, Tucson, Arizona
• Mar 11-12 - Meeting: A Decadal Assessment of Plasma Science, Washington DC
• Mar 11-13 - Conference: Large Surveys with Small Telescopes - Past, Present, and Future (Astroplate III), Bamberg, Germany
• Mar 11-14 - 2nd Workshop: Chemical Abundances in Gaseous Nebulae: Open Problems in Nebular Astrophysics, Sao Jose dos Campos, Brazil
• Mar 11-15 - Conference: Science and Surveys with the ELT Multi-Object Spectrograph (MOSAIC 2019), Heidelberg, Germany
• Mar 11-15 - 31st Workshop Beyond the Standard Model, Bad Honnef, Germany
• Mar 11-15 - 19th International Workshop on Advanced Computing and Analysis Techniques in Physics Research (ACAT 2019), Saas-Fee, Switzerland
• Mar 11-15 - School on Climate and Environmental Modelling in the West African Region, Abijan, Ivory Coast
• Mar 11-15 - PHAROS PhD Training School: Multi-messenger Physics and Astrophysics with Compact Binaries, Jena, Germany
• Mar 11-22 - School: Theoretical Aspects of Astroparticle Physics, Cosmology and Gravitation, Florence, Italy
• Mar 11-Apr 04 - ESI Programme and Workshop: Higher Spins and Holography, Vienna, Austria
• Mar 12 - Comet P/2018 A4 (PANSTARRS) At Opposition (2.695 AU)
• Mar 12 - Comet 185P/Petriew Closest Approach To Earth (2.933 AU)
• Mar 12 - Comet C/2014 B1 (Schwartz) At Opposition (9.038 AU)
• Mar 12 - Asteroid 433 Eros Occults HIP 33731 (6.7 Magnitude Star)
• Mar 12 - Apollo Asteroid 2019 DJ1 Near-Earth Flyby (0.010 AU)
• Mar 12 - Apollo Asteroid 2019 EO2 Near-Earth Flyby (0.018 AU)
• Mar 12 - Aten Asteroid 2019 EE1 Near-Earth Flyby (0.037 AU)
• Mar 12 - Atira Asteroid 434326 (2004 JG6) Closest Approach To Earth (1.277 AU)
• Mar 12 - Asteroid 2873 Binzel Closest Approach To Earth (1.300 AU)
• Mar 12 - Asteroid 7919 Prime Closest Approach To Earth (1.620 AU)
• Mar 12 - Conference: 20th Anniversary of Science Exploration with FORS, Garching, Germany
• Mar 12 - Gustav Kirchhoff's 195th Birthday (1824)
• Mar 12-14 - European Space Components Conference (ESCCON), Noordwijk, The Netherlands
• Mar 12-14 - 3rd Sentinel-2 Validation Team Meeting, Toulouse, France
• Mar 13 - Comet 128P-A/Shoemaker-Holt At Opposition (3.498 AU)
• Mar 13 - Asteroid 1473 Ounas Occults HIP 57819 (6.2 Magnitude Star)
• Mar 13 - Apollo Asteroid 2019 EN2 Near-Earth Flyby (0.002 AU)
• Mar 13 - Apollo Asteroid 88254 (2001 FM129) Near-Earth Flyby (0.087 AU)
• Mar 13 - Asteroid 22824 von Neumann Closest Approach To Earth (1.716 AU)
• Mar 13 - Asteroid 9253 Oberth Closest Approach To Earth (1.831 AU)
• Mar 13 - Asteroid 8444 Popovich Closest Approach To Earth (1.870 AU)
• Mar 13 - Lecture: Exploring Ultima Thule - Humanity's Next Frontier, Menlo Park, California
• Mar 13 - Colloquium: How to Publish (and Write) an Impactful Paper in Nature Astronomy and Beyond, Sydney, Australia
• Mar 13 - Colloquium: What Drove Africa's Megaherbivores to Extinction?, Greenbelt, Maryland
• Mar 13 - 30th Anniversary (1989), STS-29 Launch (Space Shuttle Discovery, TDRS)
• Mar 13-15 - ALMA Data Reduction Party, Charlottesville, Virginia
• Mar 13-26 - 10th Latin-American School of High-Energy Physics (CLASHEP2019), Cordoba, Argentina
• Mar 14 - Pi Day
• Mar 14 - Soyuz MS-12 Soyuz FG Launch (International Space Station 58S), Successful
• Mar 14 - Comet P/2006 F4 At Opposition (1.510 AU)
• Mar 14 - Comet C/2018 N1 (NEOWISE) Closest Approach To Earth (2.443 AU)
• Mar 14 - Apollo Asteroid 2019 ED2 Near-Earth Flyby (0.012 AU)
• Mar 14 - Aten Asteroid 2019 FD Near-Earth Flyby (0.022 AU)
• Mar 14 - Apollo Asteroid 2016 CK31 Near-Earth Flyby (0.093 AU)
• Mar 14 - Asteroid 1712 Angola Closest Approach To Earth (2.176 AU)
• Mar 14 - Asteroid 50 Virginia Closest Approach To Earth (2.344 AU)
• Mar 14 - Asteroid 30826 Coulomb Closest Approach To Earth (2.425 AU)
• Mar 14 - Asteroid 6042 Chesirecat Closest Approach To Earth (3.310 AU)
• Mar 14 - Lecture: The Golden Age of Exoplanet Exploration, Pasadena, California
• Mar 14 - Lecture: Ensuring Inclusivity - How Diversity is Like Quantum Mechanics, Ithaca, New York
• Mar 14 - Seminar: Maximal Freedom at Minimum Cost - On the Future of General Scalar-Tensor Theories in Cosmology, Trieste, Italy
• Mar 14 - Colloquium: Topology, Entanglement, and Time-Reversal Symmetry in Quantum Many-Body Physics, Princeton, New Jersey
• Mar 14 - Gene Cernan's 85th Birthday (1934)
• Mar 14 - Albert Einstein's 140th Birthday (1879)
• Mar 14-15 - Workshop on Advances in Packaging and Components (APAC 2019), Noordwijk, The Netherlands
• Mar 14-16 - 3rd IVS Training School on VLBI for Geodesy and Astrometry, Las Palmas, Canary Islands, Spain
• Mar 14-17 - 74th Annual Meeting of the Physical Soceity of Japan, Kyushu, Japan
• Mar 15 - WGS-10 Delta 4 Launch, Successful
• Mar 15 - Comet 169P/NEAT Closest Approach To Earth (2.492 AU)
• Mar 15 - Apollo Asteroid 2019 FE Near-Earth Flyby (0.004 AU)
• Mar 15 - Apollo Asteroid 2019 FB Near-Earth Flyby (0.008 AU)
• Mar 15 - Apollo Asteroid 2019 FC Near-Earth Flyby (0.009 AU)
• Mar 15 - Apollo Asteroid 2015 EF7 Near-Earth Flyby (0.052 AU)
• Mar 15 - Aten Asteroid 483656 (2005 ES70) Near-Earth Flyby (0.056 AU)
• Mar 15 - Asteroid 3524 Schulz Closest Approach To Earth (1.309 AU)
• Mar 15 - Amor Asteroid 2368 Beltrovata Closest Approach To Earth (1.888 AU)
• Mar 15 - Asteroid 1762 Russell Closest Approach To Earth (2.046 AU)
• Mar 15 - Lecture: The Golden Age of Exoplanet Exploration, Pasadena, California
• Mar 15 - Lecture: Planet Nine from Outer Space, Pasadena, California
• Mar 15 - 10th Anniversary (2009), STS-119 Launch (Space Shuttle Disocvery, International Space Station)
• Mar 16 - Comet 44P/Reinmuth At Opposition (4.217 AU)
• Mar 16 - Apollo Asteroid 2019 FA Near-Earth Flyby (0.002 AU)
• Mar 16 - Apollo Asteroid 2019 ES Near-Earth Flyby (0.023 AU)
• Mar 16 - Asteroid 204852 Frankfurt Closest Approach To Earth (1.613 AU)
• Mar 16 - Asteroid 35977 Lexington Closest Approach To Earth (2.023 AU)
• Mar 16 - Asteroid 6223 Dahl Closest Approach To Earth (2.059 AU)
• Mar 16 - Asteroid 9446 Cicero Closest Approach To Earth (2.078 AU)
• Mar 16 - Asteroid 1282 Utopia Closest Approach To Earth (2.389 AU)
• Mar 16 - Lectures on India & China Space Race, Chevaline, Worcestershire, United Kingdom
• Mar 16 - Griffith Observatory Public Star Party, Los Angeles
• Mar 16 - Georg Ohm's 230th Birthday (1789)
• Mar 16-17 - Microsymposium 60: Forward to the Moon to Stay - Undertaking Transformative Lunar Science with Commercial Partners, The Woodlands, Texas
• Mar 16-23 - 54rd Rencontres de Moriond: Electroweak Interactions and Unified Theories, La Thuile, Aosta Valley, Italy
• Mar 17 - Comet 60P/Tsuchinshan At Opposition (0.877 AU)
• Mar 17 - Comet C/2018 A6 (Gibbs) Closest Approach To Earth (2.724 AU)
• Mar 17 - Comet P/2003 L1 (Scotti) At Oppositon (4.351 AU)
• Mar 17 - Asteroid 184011 Andypuckett Closest Approach To Earth (1.343 AU)
• Mar 17 - Asteroid 763 Cupido Closest Approach To Earth (1.585 AU)
• Mar 17 - Asteroid 6984 Lewiscarroll Closest Approach To Earth (2.780 AU)
• Mar 17 - Asteroid 2483 Guinevere Closest Approach To Earth (2.992 AU)
• Mar 17 - 120th Anniversary (1899), William Pickering's Discovery of Saturn Moon Phoebe
• Mar 17-19 - 24th Meeting of the European VLBI Group for Geodesy and Astrometry (EVGA), Las Palmas, Canary Islands, Spain
• Mar 17-21 - HEAD 17th Divisional Meeting, Monterey, California
• Mar 17-22 - DPG Spring Meeting of the German Physical Society, Munich, Germany
• Mar 18 - Comet 69P/Taylor Perihelion (2.283 AU)
• Mar 18 - Comet 324P/La Sagra At Opposition (2.591 AU)
• Mar 18 - Asteroid 6175 Cori Occults HIP 49669 (1.3 Magnitude Star)
• Mar 18 - Apollo Asteroid 2019 DH1 Near-Earth Flyby (0.022 AU)
• Mar 18 - Apollo Asteroid 2016 ED1 Near-Earth Flyby (0.096 AU)
• Mar 18 - Asteroid 22521 ZZ Top Closest Approach To Earth (1.288 AU)
• Mar 18 - Asteroid 5450 Sokrates Closest Approach To Earth (1.697 AU)
• Mar 18 - Asteroid 6434 Jewitt Closest Approach To Earth (1.865 AU)
• Mar 18 - Colloquium: Insights into the Voyager 2 Mission - Progress and Outcomes, Sydney, Australia
• Mar 18 - Colloquium: Artificial Intelligence Meets Basic Research - The SETI Institute and NASA's Frontier Development Lab, Menlo Park, California
• Mar 18 - Justus Westphal's 195th Birthday (1824)
• Mar 18-19 - 1st ESA Workshop on Advanced Manufacturing, Noordwijk, The Netherlands
• Mar 18-20 - 2019 Center for High Angular Resolution Astronomy (CHARA) and Navy Precision Optical Interferometer (NPOI) Science Meeting, Flagstaff, Arizona
• Mar 18-21 - Workshop: Extreme Precision in Radial Velocity IV, Grindelwald, Switzerland
• Mar 18-21 - Geoscience and Society Summit: Bridges to Global Health, Resilience, and Sustainability, Stockholm, Sweden
• Mar 18-21 - 7th International Conference on Remote Sensing and Geoinformation of Environment (RSCY2019), Paphos, Cyprus
• Mar 18-22 - 50th Lunar and Planetary Science Conference (LPSC), The Woodlands, Texas
• Mar 18-22 - Conference: The Life and Death of Star-Forming Galaxies, Perth, Australia
• Mar 18-22 - Conference: The Metrewavelength Sky - II: Celebrating the 90th Year of Govind Swarup and the 1st Year of the Upgraded GMRT, Pune, India
• Mar 18-22 - Workshop: Galaxy Evolution in the Cosmic Web, Leiden, The Netherlands
• Mar 18-22 - 18th International Workshop on Neutrino Telescopes (NeuTel 2019), Venice, Italy
• Mar 18-22 - Workshop: Unlocking a New Era in Biodiversity Science - Linking Integrated Space Based and In-Situ Observations - Part II, Pasadena, California
• Mar 18-22 - Conference: Quantum Gravity and Quantum Information, Geneva, Switzerland
• Mar 18-22 - Flux Emergence Workshop 2019, Tokyo, Japan
• Mar 18-22 - 2019 March LIGO-VIRGO Collaboration Meeting, Lake Geneva, Wisconsin
• Mar 19 - Comet 220P/McNaught At Opposition (3.210 AU)
• Mar 19 - Comet P/2014 W12 (Gibbs) At Opposition (3.987 AU)
• Mar 19 - Asteroid 358 Apollonia Occults HIP 19036 (6.7 Magnitude Star)
• Mar 19 - Aten Asteroid 2019 FO Near-Earth Flyby (0.017 AU)
• Mar 19 - Apollo Asteroid 2019 CL2 Near-Earth Flyby (0.026 AU)
• Mar 19 - Asteroid 3749 Balam (2 Moons) Closest Approach To Earth (1.147 AU)
• Mar 19 - Apollo Asteroid 38086 Beowulf Closest Approach To Earth (1.194 AU)
• Mar 19 - Asteroid 9766 Bradbury Closest Approach To Earth (1.361 AU)
• Mar 19 - Asteroid 3869 Norton Closest Approach To Earth (1.698 AU)
• Mar 19 - Asteroid 9340 Williamholden Closest Approach To Earth (2.061 AU)
• Mar 19 - 140th Anniversary (1879), Tenham Meteorite Shower in Australia
• Mar 19 - William Dawes' 220th Birthday (1799)
• Mar 19-20 - IOP Topical Research Meeting on Time, London, United Kingdom
• Mar 19-21 - Robert H. Goddard Memorial Symposium: The Next Giant Leap - Earth, Moon, Mars, and Beyond, Silver Spring, Maryland
• Mar 19-21 - Global Space Congress, United Arab Emirates, Abu Dhabi
• Mar 19-21 - Workshop: Bi- and Multistatic SAR Systems and Applications, Delft, The Netherlands
• Mar 19-22 - Cosmology@Malta2019 Meeting: Cosmology and Astrophysics Network for Theoretical Advances and Training Actions, Valletta, Malta
• Mar 19-23 - Workshop 1: Spacetime Metrology, Clocks and Relativistic Geodesy, Bern, Switzerland
• Mar 20 - Vernal Equinox, 21:58 UT
• Mar 20 - Comet C/2019 B1 (Africano) Perihelion (1.596 AU)
• Mar 20 - Comet 49P/Arend-Rigaux Closest Approach To Earth (1.930 AU)
• Mar 20 - Comet C/2018 O1 (ATLAS) Closest Approach To Earth (2.141 AU)
• Mar 20 - Comet 321P/SOHO Closest Approach To Earth (2.844 AU)
• Mar 20 - Comet 238P/Read Closest Approach To Earth (2.914 AU)
• Mar 20 - Apollo Asteroid 2019 FY1 Near-Earth Flyby (0.017 AU)
• Mar 20 - Apollo Asteroid 2019 CD5 Near-Earth Flyby (0.026 AU)
• Mar 20 - Apollo Asteroid 2015 BY310 Near-Earth Flyby (0.059 AU)
• Mar 20 - Asteroid 28078 Mauricehilleman Closest Approach To Earth (1.224 AU)
• Mar 20 - Asteroid 71885 Denning Closest Approach To Earth (1.267 AU)
• Mar 20 - Asteroid 7041 Nantucket Closest Approach To Earth (1.567 AU)
• Mar 20 - Asteroid 1655 Comas Sola Closest Approach To Earth (1.888 AU)
• Mar 20 - Colloquium: The Edge of the Solar System and Beyond, Greenbelt, Maryland
• Mar 20 - Lecture: Another Pale Blue Dot - Inside the SETI Institute's Search for Exoplanets, San Franciso, California
• Mar 20 - Webinar: Understanding Tuture Extreme Sea Levels - Tools and Information to Support Coastal Management
• Mar 20 - Walter Elsasser's 115th Birthday (1904)
• Mar 21 - Supermoon
• Mar 21 - PRISMA/ TARANIS Vega Launch, Successful
• Mar 21 - Comet C/2014 C1 (TOTAS) At Opposition (0.701 AU)
• Mar 21 - Comet 324P/La Sagra Closest Approach To Earth (2.589 AU)
• Mar 21 - Comet 115P/Maury At Opposition (3.086 AU)
• Mar 21 - Asteroid 2 Pallas Occults UCAC5 510-053447 (12.0 Magnitude Star)
• Mar 21 - Apollo Asteroid 2019 DS Near-Earth Flyby (0.043 AU)
• Mar 21 - Amor Asteroid 16912 Rhiannon Closest Approach To Earth (1.172 AU)
• Mar 21 - Asteroid 7755 Haute-Provence Closest Approach To Earth (1.874 AU)
• Mar 21 - Asteroid 1554 Yugoslavia Closest Approach To Earth (2.156 AU)
• Mar 21 - Asteroid 5029 Ireland Closest Approach To Earth (2.233 AU)
• Mar 21 - Seminar: Galaxy Clustering in the Effective Field Theory Approach, Trieste, Italy
• Mar 21 - Colloquium: The Tip of the Planetary Iceberg - How Observed Planets May Differ from their More Distant Cousins, Ithaca, New York
• Mar 21 - Colloquium: Astrochemistry at the Dawn of Star and Planet Formation, Barcelona, Spain
• Mar 21 - George Birkhoff's 135th Birthday (1884)
• Mar 21 - 335th Anniversary (1684), Giovanni Cassini's Discovery of Saturn Moon Tethys & Dione
• Mar 21-22 - 2nd Physics Days 2019, Famagusta, Cyprus
• Mar 22 - Mercury Passes 3.4 Degrees From Neptune
• Mar 22 - Comet 264P/Larsen Closest Approach To Earth (1.718 AU)
• Mar 22 - Comet 238P/Read At Opposition (2.914 AU)
• Mar 22 - Comet P/2003 L1 (Scotti) Closest Approach To Earth (4.347 AU)
• Mar 22 - Asteroid 3 Juno Occults UCAC5 506-009319 (12.4 Magnitude Star)
• Mar 22 - Aten Asteroid 2019 EA2 Near-Earth Flyby (0.002 AU)
• Mar 22 - Apollo Asteroid 2019 FT1 Near-Earth Flyby (0.017 AU)
• Mar 22 - Apollo Asteroid 2019 FL Near-Earth Flyby (0.032 AU)
• Mar 22 - Apollo Asteroid 4581 Asciepius Closest Approach To Earth (0.138 AU)
• Mar 22 - Asteroid 2074 Shoemaker Closest Approach To Earth (0.950 AU)
• Mar 22 - Amor Asteroid 3199 Nefertiti Closest Approach To Earth (1.062 AU)
• Mar 22 - Apollo Asteroid 1685 Toro Closest Approach To Earth (1.265 AU)
• Mar 22 - Asteroid 13123 Tyson Closest Approach To Earth (1.964 AU)
• Mar 22 - Asteroid 35165 Quebec Closest Approach To Earth (2.211 AU)
• Mar 22 - Seminar: Light Echoes from Accreting Black Holes, Barcelona, Spain
• Mar 22 - Friedrich Argelander's 220th Birthday (1799)
• Mar 22 - Ulugh Beg's 625th Birthday (1394)
• Mar 22-23 - Science with the Super-Enge Spectrograph at FSU & Cenaur Workshop on Transfer Reactions (SESPS), Tallahassee, Florida
• Mar 23 - Mars Spring Equinox
• Mar 23 - Comet P/2006 F4 Closest Approach To Earth (1.499 AU)
• Mar 23 - Comet P/1999 XN120 (Catalina) Closest Approach To Earth (3.144 AU)
• Mar 23 - Comet C/2017 S3 (PANSTARRS) At Opposition (3.296 AU)
• Mar 23 - Comet 326P/Hill At Opposition (4.258 AU)
• Mar 23 - Apollo Asteroid 2019 FQ Near-Earth Flyby (0.002 AU)
• Mar 23 - Apollo Asteroid 2019 FF Near-Earth Flyby (0.008 AU)
• Mar 23 - Apollo Asteroid 2019 FP Near-Earth Flyby (0.009 AU)
• Mar 23 - Apollo Asteroid 2019 EK2 Near-Earth Flyby (0.012 AU)
• Mar 23 - Apollo Asteroid 2019 FO2 Near-Earth Flyby (0.028 AU)
• Mar 23 - Apollo Asteroid 1864 Daedalus Closest Approach To Earth (1.017 AU)
• Mar 23 - Asteroid 7758 Poulanderson Closest Approach To Earth (1.332 AU)
• Mar 23 - Asteroid 8080 Intel Closest Approach To Earth (2.690 AU)
• Mar 23 - Asteroid 37452 Spirit Closest Approach To Earth (3.573 AU)
• Mar 23 - Event: Women in STEAM in Space Day, Oakland, California
• Mar 23 - Educators Workshop: Discussing Climate Science in the Classroom, Downey, California
• Mar 23 - Norman Pogson's 190th Birthday (1829)
• Mar 23 - Pierre Simon Laplace's 270th Birthday (1749)
• Mar 23-30 - Rencontres de Moriond and GRAM Colloquium on Gravitation, La Thuile, Aosta Valley, Italy
• Mar 24 -[Apr 09] Apollo Asteroid 2019 GF3 Near-Earth Flyby (0.032 AU)
• Mar 24 - Apollo Asteroid 2005 FC3 Near-Earth Flyby (0.077 AU)
• Mar 24 - Asteroid 16155 Buddy Closest Approach To Earth (1.812 AU)
• Mar 24 - Asteroid 246247 Sheldoncooper Closest Approach To Earth (2.006 AU)
• Mar 24 - Asteroid 12542 Laver Closest Approach To Earth (2.540 AU)
• Mar 24 - Jupiter Trojan 3317 Paris At Opposition (4.325 AU)
• Mar 24-29 - Caltech Space Challenge 2019, Pasadena, California
• Mar 25 - Comet 128P-B/Shoemaker-Holt At Opposition (3.777 AU)
• Mar 25 - Comet 128P/Shoemaker-Holt At Opposition (3.778 AU)
• Mar 25 - Apollo Asteroid 2019 FX1 Near-Earth Flyby (0.004 AU)
• Mar 25 - Apollo Asteroid 2019 FP1 Near-Earth Flyby (0.017 AU)
• Mar 25 - Aten Asteroid 3554 Amun Closest Approach To Earth (1.281 AU)
• Mar 25 - Asteroid 9250 Chamberlin Closest Approach To Earth (1.719 AU)
• Mar 25 - Asteroid 19034 Santorini Closest Approach To Earth (3.568 AU)
• Mar 25 - Lecture: Origin and Evolution of Comets, Ithaca, New York
• Mar 25 - Lecture: A Story of Ice, Water, and Fire Under the South Pole of Mars, Tucson, Arizona
• Mar 25-26 - Cosmic Lab Workshop, Narashino, Japan
• Mar 25-27 - 54th 3AF International Conference on Applied Aerodynamics: Aerodynamics at Off-Design Conditions, Paris, France
• Mar 25-27 - Munich Satellite Navigation Summit 2019, Munich, Germany
• Mar 25-27 - CFC-11 Symposium On The Unexpected Increase in Emissions of Ozone-Depleting CFC, Vienna, Austria
• Mar 25-28 - United Nations/Jordan Workshop: Global Partnership in Space Exploration and Innovation, Amman, Jordan
• Mar 25-28 - African Geophysical Society Conference on Space Weather, Cairo, Egypt
• Mar 25-29 - The New Era of Multi-Messenger Astrophysics Conference, Groningen, The Netherlands
• Mar 25-29 - Conference: Extremely Big Eyes on the Early Universe, Kashiwa, Japan
• Mar 25-29 - 15th Rencontres du Vietnam: Life3E - Search for life, from Early Earth to Exoplanets, Quy Nhon, Vietnam
• Mar 25-29 - Conference: The La Silla Observatory - From the Inauguration to the Future, La Serena, Chile
• Mar 25-29 - Workshop 2: Spacetime Metrology, Clocks and Relativistic Geodesy, Bern, Switzerland
• Mar 25-29 - 2019 Santa Barbara Gaia Sprint, Santa Barbara, California
• Mar 25-29 - DPG Spring Meeting of the German Physical Society, Aachen, Germany
• Mar 26 - Apollo Asteroid 2019 FU1 Near-Earth Flyby (0.005 AU)
• Mar 26 - Apollo Asteroid 2019 FK1 Near-Earth Flyby (0.021 AU)
• Mar 26 - Apollo Asteroid 2019 FU2 Near-Earth Flyby (0.027 AU)
• Mar 26 - Amor Asteroid 8034 Akka Closest Approach To Earth (1.088 AU)
• Mar 26 - Dwarf Planet 136472 Makemake At Opposition (51.671 AU)
• Mar 26 - Seminar: Constraining the Early Universe with Primordial Black Holes, Barcelona, Spain
• Mar 26 - Charles Juels' 75th Birthday (1944)
• Mar 26-27 - URSI-France Workshop: Approaching Both Infinities Through Electromagnetic Waves, Paris, France
• Mar 26-28 - Space Science Week, Washington DC
• Mar 26-28 - Workshop on Simulation for European Space Programmes (SESP), Noordwijk, The Netherlands
• Mar 26-28 - AO4ASTRO Workshop, Marseille, France
• Mar 26-28 - International Astronautical Federation (IAF) 2019 Spring Meeting, Paris, France
• Mar 26-29 - Aeolus CalVal and Science Workshop 2019, Rome, Italy
• Mar 27 - 50th Anniverary (1969), Mariner 7 Launch (Mars Flyby Mission)
• Mar 27 - Lingque 1B OS-M1 Launch, Failed
• Mar 27 - Comet C/2014 C1 (TOTAS) Closest Approach To Earth (0.697 AU)
• Mar 27 - Comet 185P/Petriew At Opposition (2.967 AU)
• Mar 27 - Comet 18D/Perrine-Mrkos At Opposition (4.251 AU)
• Mar 27 - Apollo Asteroid 2019 FA2 Near-Earth Flyby (0.007 AU)
• Mar 27 -[Apr 09] Aten Asteroid 2019 GS2 Near-Earth Flyby (0.022 AU)
• Mar 27 - Apollo Asteroid 2019 EN Near-Earth Flyby (0.025 AU)
• Mar 27 -[Apr 05] Apollo Asteroid 1999 TT16 Near-Earth Flyby (0.031 AU)
• Mar 27 -[Apr 06] Aten Asteroid 2019 GJ Near-Earth Flyby (0.045 AU)
• Mar 27 - Apollo Asteroid 2014 TL Near-Earth Flyby (0.057 AU)
• Mar 27 - Aten Asteroid 2004 BY1 Near-Earth Flyby (0.063 AU)
• Mar 27 - Asteroid 8003 Kelvin Closest Approach To Earth (1.494 AU)
• Mar 27 - Amor Asteroid 3908 Nyx Closest Approach To Earth (1.706 AU)
• Mar 27 - Innovation in Space Festival, Manchester, United Kingdom
• Mar 27 - Colloquium: Voyager Observations of the Outer Heliosphere and Interstellar Medium, Greenbelt, Maryland
• Mar 27 - Lecture: Stellar Coalescence at the Onset of Common Envelope Phases, Ithaca, New York
• Mar 27 - Colloquium: HTRU Pulsar Result, Sydney, Australia
• Mar 27-29 - 2nd Cosmic-Ray Antideuteron Workshop, Los Angeles, California
• Mar 27-29 - Workshop: Space Gravitational-Wave Detection, Tokyo, Japan
• Mar 27-30 - Conference: R-Process Sources in the Universe, Tempe, Arizona
• Mar 28 - DARPA R3D2 Electron Launch, Successful
• Mar 28 - Comet P/1999 XN120 (Catalina) At Opposition (3.148 AU)
• Mar 28 - Apollo Asteroid 2019 FC1 Near-Earth Flyby (0.0007 AU)
• Mar 28 - Apollo Asteroid 2019 FX Near-Earth Flyby (0.014 AU)
• Mar 28 - Asteroid 5020 Asimov Closest Approach To Earth (1.509 AU)
• Mar 28 - Neptune Trojan 316179 (2010 EN65) At Opposition (25.989 AU)
• Mar 28 - Teleconference: Astronomy and Astrophysics Advisory Committee (AAAC) Meeting
• Mar 28 - Lecture: Using Gravity to Probe the Martian Sedimentary Rock Record, Ithaca, New York
• Mar 28 - Seminar: Chronology of Planetesimal Differentiation Based on Timing of Achondrite Formation in the Early Solar System, Houston, Texas
• Mar 28 - Seminar: Precise Photo-Astrometric Distances, Extinctions, and Stellar Parameters for 150 Million Stars in Gaia DR2, Barcelona, Spain
• Mar 28 - Seminar: Constructing Nucleus-Nucleus Potentials from Chiral EFT, Barcelona, Spain
• Mar 28 - 70th Anniversary (1949), Fred Hoyle Coins the Term "Big Bang"
• Mar 28-29 - Europlanet Cometary Plasma Science Workshop, Helsinki, Finland
• Mar 28-Apr 05 - School on Superstring Theory and Related Topics, Trieste, Italy
• Mar 29 - Moon Occults Saturn
• Mar 29 - Moon Occults Dwarf Planet Pluto
• Mar 29 - Comet 138P/Shoemaker-Levy Closest Approach To Earth (2.693 AU)
• Mar 29 - Aten Asteroid 2019 FB2 Near-Earth Flyby (0.005 AU)
• Mar 29 -[Apr 10] Aten Asteroid 2019 GX3 Near-Earth Flyby (0.012 AU)
• Mar 29 - Apollo Asteroid 2019 FW Near-Earth Flyby (0.021 AU)
• Mar 29 -[Apr 05] Aten Asteroid 2019 GA Near-Earth Flyby (0.023 AU)
• Mar 29 -[Apr 10] Apollo Asteroid 2019 GR5 Near-Earth Flyby (0.027 AU)
• Mar 29 -[Apr 06] Apollo Asteroid 2019 GL Near-Earth Flyby (0.048 AU)
• Mar 29 - Amor Asteroid 7480 Norwan Closest Approach To Earth (1.071 AU)
• Mar 29 - Asteroid 4825 Ventura Closest Approach To Earth (1.629 AU)
• Mar 29 - Amor Asteroid 3988 Huma Closest Approach To Earth (1.756 AU)
• Mar 29 - Amor Asteroid 4954 Eric Closest Approach To Earth (1.918 AU)
• Mar 29 - Amor Asteroid 2202 Pele Closest Approach To Earth (2.340 AU)
• Mar 29 - Galaxy Forum Hawaii 2019: Kona - Hawaii 21st Century Science, and Astronomy from the Moon, Kona, Hawaii
• Mar 29 - Seminar: Black Holes as Blobs on a Black Brane, Barcelona, Spain
• Mar 29 - Colloquium: Our Years with Piers - A Tribute to Piers Sellers, Greenbelt, Maryland
• Mar 29 - 45th Anniversary (1974), Mariner 10, 1st Mercury Flyby
• Mar 29-30 - 35th Jim Isenberg Pacific Coast Gravity Meeting, Logan, Utah
• Mar 30 - Earth Hour
• Mar 30 - Comet 169P/NEAT At Opposition (2.529 AU)
• Mar 30 - Comet 193P/LINEAR-NEAT At Opposition (3.695 AU)
• Mar 30 -[Apr 05] Apollo Asteroid 2019 GB Near-Earth Flyby (0.006 AU)
• Mar 30 -[Apr 10] Apollo Asteroid 2019 GD4 Near-Earth Flyby (0.010 AU)
• Mar 30 - Amor Asteroid 2019 FQ2 Near-Earth Flyby (0.032 AU)
• Mar 30 - Asteroid 7175 Janegoodall Closest Approach To Earth (1.945 AU)
• Mar 30 - Institute of Physics (IOP) Ireland Spring Meeting: A Climage of Change, Westmeath, Ireland
• Mar 30 - Jean-Francois Pilatre de Rozier's 265th Birthday (1754)
• Mar 30-Apr 01 - 10th International Conference on High Energy and Astroparticle Physics (TIC-HEAP), Constantine, Algeria
• Mar 31 - Tianlian-2 01 CZ-3B/G2 Launch, Successful
• Mar 31 - European Summer Time - Set Clock Ahead 1 Hour (European Union)
• Mar 31 - Moon Occults Asteroid 21 Lutetia
• Mar 31 - Asteroid 211 Isolda Occults HIP 54910 (6.8 Magnitude Star)
• Mar 31 - Apollo Asteroid 2019 FB1 Near-Earth Flyby (0.004 AU)
• Mar 31 - Apollo Asteroid 2019 FL1 Near-Earth Flyby (0.007 AU)
• Mar 31 -[Apr 05] Apollo Asteroid 2019 GE Near-Earth Flyby (0.007 AU)
• Mar 31 -[Apr 06] Apollo Asteroid 2019 GJ1 Near-Earth Flyby (0.014 AU)
• Mar 31 - Aten Asteroid 2019 FQ1 Near-Earth Flyby (0.024 AU)
• Mar 31 - Apollo Asteroid 2019 FZ1 Near-Earth Flyby (0.029 AU)
• Mar 31 - Amor Asteroid 2019 FF1 Near-Earth Flyby (0.048 AU)
• Mar 31 - Apollo Asteroid 163081 (2002 AG29) Near-Earth Flyby (0.099 AU)
• Mar 31 - Asteroid 46610 Besixdouz Closest Approach To Earth (1.665 AU)
• Mar 31 - Asteroid 11881 Mirstation Closest Approach To Earth (2.036 AU)
• Mar 31-Apr 04 - 257th American Chemical Society (ACS) National Meeting, Orlando, Florida
• Mar 31-Apr 05 - Meeting: New Quests in Stellar Astrophysics IV - Astrochemistry, Astrobiology and the Origin of Life, Puerto Vallarta, Mexico
• Mar 31-Apr 05 - International Conference on High Energy Density Science (ICHED), Oxford, United Kingdom
• Mar 31-Apr 07 - Workshop: Towards Spacetime Entanglement Entropy for Interacting Theories, Banff, Canada

April 2019

• Apr ?? - NicaSat-1 (LSTSAT-1) CZ-3B/E Launch Ionosfera 3 & 4 Soyuz-2.1b/Fregat-M Launch
• Apr ?? - ICEYE X5 Soyuz Launch
• Apr ?? - BlackSky Global 3 PSLV Launch
• Apr ?? - Shijian 19 (SJ-19) CZ-2D Launch
• Apr ?? -[Apr 03] Meridian-M 18L Soyuz-2 Launch
• Apr ?? -[Apr 03] Chinasat 18 (Zhongxing-18) CZ-3B/G2 Launch
• Apr ?? -[Apr 08] Harbinger/ SPARC 1/ Falcon-ODE Electron KS Launch
• Apr 01 - EMISAT/ Lemur-2/ BlueWalker 1/ M6P/ Danu Pathfinder PSLV Launch, Successful
• Apr 01 - Comet P/2018 A5 (PANSTARRS) At Opposition (3.671 AU)
• Apr 01 - Asteroid 3 Juno Occults TYC 0707-00569-1 (11.7 Magnitude Star)
• Apr 01 - Apollo Asteroid 2019 FR2 Near-Earth Flyby (0.005 AU)
• Apr 01 -[Apr 09] Apollo Asteroid 2019 GK3 Near-Earth Flyby (0.007 AU)
• Apr 01 - Aten Asteroid 2014 FK38 Near-Earth Flyby (0.059 AU)
• Apr 01 - Asteroid 6735 Madhatter Closest Approach To Earth (1.235 AU)
• Apr 01 - Aten Asteroid 326290 Akhenaten Closest Approach To Earth (1.298 AU)
• Apr 01 - Asteroid 2866 Hardy Closest Approach To Earth (2.432 AU)
• Apr 01 - Asteroid 2041 Lancelot Closest Approach To Earth (2.621 AU)
• Apr 01 - Binary Jupiter Trojan 617 Patroclus At Opposition (4.928 AU)
• Apr 01 - Centaur Object 31824 Elatus At Opposition (15.293 AU)
• Apr 01 - Seminar: Subsurface, Subaqueous, and Salty - Looking for Life in All the Right Places, Houston, Texas
• Apr 01-02 - Conference: Military Space Situational Awareness 2019, London, United Kingdom
• Apr 01-03 - Centaur Exploration Workshop, Orlando, Florida
• Apr 01-03 - Conference: The Landscape of Space Astrophysics in the 2020s and Beyond, Potomac, Maryland
• Apr 01-03 - Strings, Cosmology, and Gravity Student Conference (SCGSC 2019), Munich, Germany
• Apr 01-03 - 1st Donglu Astrophysics Forum: The Era of Large-Scale Sky Surveys - Near Field Cosmology and Time Domain Science, Kunming, China
• Apr 01-03 - Strings, Cosmology, and Gravity Student Conference (SCCGSC 2019), Munich, Germany
• Apr 01-05 - Space Weather Workshop, Boulder, Colorado
• Apr 01-05 - Conference: In the Balance - Stasis and Disequilibrium in the Milky Way, Santa Barbara, California
• Apr 01-05 - Symposium: Grand Challenges in Stellar Physics - Pulsating Stars in the Universe, Nice, France
• Apr 01-05 - Symposium: Turbulence & Magnetic Fields - From the Early Universe to Late-type Stars, Tuusula, Finland
• Apr 01-05 - 17th Workshop on Nuclear Physics (WONP-2019), Havana, Cuba
• Apr 01-05 - 9th Friends of Friends Meeting: Linking Astronomy and Friends in Cordoba, Cordoba, Argentina
• Apr 01-05 - 2nd International Space Science Institute (ISSI) Towards Unified Error Reporting (TUNER) Meeting, Bern, Switzerland
• Apr 01-12 - 58th Session of the Legal Subcommittee of the United Nations Office for Outer Space Affairs, Vienna, Austria
• Apr 01-12 - Program: Dark Matter Identification - Connecting Theory and Signature Space, Mainz, Germany
• Apr 01-12 - Workshop: Nonperturbative Methods For Conformal Theories, Natal, Brazil
• Apr 02 - Mercury Passes 0.4 Degrees From Neptune
• Apr 02 - Apollo Asteroid 2019 FT2 Near-Earth Flyby (0.006 AU)
• Apr 02 -[Apr 09] Apollo Asteroid 2019 GL3 Near-Earth Flyby (0.010 AU)
• Apr 02 -[Apr 09] Apollo Asteroid 2019 GE3 Near-Earth Flyby (0.019 AU)
• Apr 02 - Apollo Asteroid 2019 FN1 Near-Earth Flyby (0.022 AU)
• Apr 02 -[Apr 10] Apollo Asteroid 2019 GZ5 Near-Earth Flyby (0.035 AU)
• Apr 02 - Aten Asteroid 2018 PK21 Near-Earth Flyby (0.088 AU)
• Apr 02 - Asteroid 5049 Sherlock Closest Approach To Earth (1.554 AU)
• Apr 02 - Asteroid 2198 Ceplecha Closest Approach To Earth (2.003 AU)
• Apr 02 - Asteroid 17078 Sellers Closest Approach To Earth (2.358 AU)
• Apr 02 - 55th Anniversary (1964), Zond 1 Launch (USSR Venus Flyby Mission)
• Apr 02 - 60th Anniversary (1959), Selection Of The Mercury 7 Astronauts
• Apr 02-04 - Paris Space Week, Paris, France
• Apr 02-04 - Microwave Technology and Techniques Workshop (MTT), Noordwijk, The Netherlands
• Apr 02-04 - Geospatial World Forum, Amsterdam, Netherlands
• Apr 03 - Comet 149P/Mueller Closest Approach To Earth (1.792 AU)
• Apr 03 - Comet 78P/Gehrels Perihelion (2.014 AU)
• Apr 03 - Comet C/2017 K1 (PANSTARRS) Closest Approach To Earth (6.714 AU)
• Apr 03 -[Apr 10] Apollo Asteroid 2019 GW5 Near-Earth Flyby (0.024 AU)
• Apr 03 - Aten Asteroid 2011 FK1 Near-Earth Flyby (0.076 AU)
• Apr 03 - Asteroid 4416 Ramses Closest Approach To Earth (1.526 AU)
• Apr 03 - Asteroid 3905 Doppler Closest Approach To Earth (1.837 AU)
• Apr 03 - Seminar: Assessing the Habitability Potential of Mars and Beyond Through Mission Data Analysis, Numerical Modeling and Laboratory Experiments - Implications for Instrument Development, Houston, Texas
• Apr 03 - Lecture: Artists in Space - The Early Years, London, United Kingdom
• Apr 03 - Lecture: Where Did We Come From - A Tale About Galaxies Far, Far Away , Kamuela, Hawaii
• Apr 03-05 - SKA History Conference, Manchester, United Kingdom
• Apr 03-05 - 5th CEAS Conference on Guidance Navigation and Control (2019 EuroGNC), Milan, Italy
• Apr 03-05 - Workshop: The Dark Side of Black Holes, Brussels, Belgium
• Apr 03-05 - UniVersum 2019 Meeting: Tracing a Communal Path for the Italian Cosmology Community, Milan, Italy
• Apr 03-05 - Meeting: Review of Progress Toward Implementing the Decadal Survey - Solar and Space Physics - A Science for a Technological Society, Boulder, Colorado
• Apr 04 -[Apr 04] Progress MS-11 Soyuz-2.1a Launch (International Space Station 72P), Successful
• Apr 04 -[Apr 04] Beresheet, Moon Orbit Insertion, Successful
• Apr 04 -[Apr 05] O3b F5 Soyuz ST-B Launch, Successful
• Apr 04 - Parker Solar Probe, 2nd Perihelion
• Apr 04 - Comet P/2002 EJ57 (LINEAR) Closest Approach To Earth (2.500 AU)
• Apr 04 -[Apr 10] Aten Asteroid 2019 GJ4 Near-Earth Flyby (0.007 AU)
• Apr 04 -[Apr 06] Aten Asteroid 2019 GW1 Near-Earth Flyby (0.009 AU)
• Apr 04 - Apollo Asteroid 2016 GE1 Near-Earth Flyby (0.010 AU)
• Apr 04 -[Apr 06] Apollo Asteroid 2019 GM1 Near-Earth Flyby (0.020 AU)
• Apr 04 - Amor Asteroid 2019 FW1 Near-Earth Flyby (0.043 AU)
• Apr 04 - DORIS Analysis Working Group meeting (AWG) of the International DORIS Service, Munich, Germany
• Apr 04 - Colloquium: Massive Black Hole Binaries in the Cosmos, Princeton, New Jersey
• Apr 04 - Lecture: Clues about the Early Martian Climate from the Phyllosilicate Record - How Warm is Warm?, Knoxville, Tennessee
• Apr 04 - Seminar: Apollo Zircons - A New Perspective on Lunar Crustal Evolution, Houston, Texas
• Apr 04 - Lecture: A Brief History of Branes, Trieste, Italy
• Apr 04 - Seminar: The Internal Structure of Open Clusters - The Case of NGC 2682 (M67), Barcelona, Spain
• Apr 04 - Shing-Tung Yau's 70th Birthday (1949)
• Apr 04-05 - Science Talk '19 Conference, Portland, Oregon
• Apr 04-06 - 2nd International Conference On Astronomy, Astrophysics & Astrobiology, Auckland, New Zealand
• Apr 05 - Comet 149P/Mueller At Opposition (1.792 AU)
• Apr 05 - Comet C/2018 N1 (NEOWISE) At Opposition (2.558 AU)
• Apr 05 - Comet 284P/McNaught At Opposition (3.732 AU)
• Apr 05 - Asteroid 342431 Hilo Closest Approach To Earth (2.344 AU)
• Apr 05 - 8th New England String Meeting, Providence, Rhode Island
• Apr 05 - Lecture: A Two-Higgs-Doublet-Model for Muon g-2 and Dark Matter, Barcelona, Spain
• Apr 05 - Judith Resnick's 70th Birthday (1949)
• Apr 05 - Larry Bell's 125th Birthday (1894)
• Apr 06 - Comet C/2018 K1 (Weiland) At Opposition (3.389 AU)
• Apr 06 - Comet 127P/Holt-Olmstead At Opposition (3.682 AU)
• Apr 06 - Asteroid 433 Eros Occults TYC 4855-25-1 (10.3 Magnitude Star)
• Apr 06 -[Apr 06] Apollo Asteroid 2019 GU1 Near-Earth Flyby (0.004 AU)
• Apr 06 -[Apr 09] Apollo Asteroid 2019 GJ3 Near-Earth Flyby (0.008 AU)
• Apr 06 -[Apr 10] Apollo Asteroid 2019 GU5 Near-Earth Flyby (0.016 AU)
• Apr 06 - Apollo Asteroid 2019 FV Near-Earth Flyby (0.038 AU)
• Apr 06 - Atira Asteroid 164294 (2004 XZ130) Closest Approach To Earth (0.656 AU)
• Apr 06 - Asteroid 43844 Rowling Closest Approach To Earth (2.230 AU)
• Apr 06 - 35th Anniversary (1984), STS-41-C Launch (Space Shuttle Challenger, LDEF)
• Apr 07 - Comet 232P/Hill Perihelion (2.985 AU)
• Apr 07 -[Apr 06] Apollo Asteroid 2019 GS Near-Earth Flyby (0.009 AU)
• Apr 07 -[Apr 05] Aten Asteroid 2019 FY2 Near-Earth Flyby (0.050 AU)
• Apr 07 - Asteroid 8630 Billprady Closest Approach To Earth (1.024 AU)
• Apr 07 - Asteroid 144296 Steviewonder Closest Approach To Earth (1.052 AU)
• Apr 07 - Asteroid 34419 Corning Closest Approach To Earth (1.300 AU)
• Apr 07 - Asteroid 159814 Saguaro Closest Approach To Earth (1.767 AU)
• Apr 07 - Asteroid 904 Rockefellia Closest Approach To Earth (2.054 AU)
• Apr 07 - Asteroid 793 Arizona Closest Approach To Earth (2.102 AU)
• Apr 07 - Asteroid 495181 Rogerwaters Closest Approach To Earth (2.380 AU)
• Apr 07 - 60th Anniversary (1959), Radar Bounced Off Sun by Lincoln Laboratories
• Apr 07 - James Glaisher's 210th Birthday (1809)
• Apr 07-12 - European Geosciences Union General Assembly 2019, Vienna, Austria
• Apr 07-13 - Workshop: Light Scalars - Origin, Cosmology, Astrophysics and Experimental Probes, Benasque, Spain
• Apr 08 - Comet C/2018 O1 (ATLAS) At Opposition (2.237 AU)
• Apr 08 - Comet C/2017 K1 (PANSTARRS) At Opposition (6.719 AU)
• Apr 08 - Aten Asteroid 2019 FS2 Near-Earth Flyby (0.008 AU)
• Apr 08 -[Apr 05] Apollo Asteroid 2019 GC Near-Earth Flyby (0.016 AU)
• Apr 08 -[Apr 06] Amor Asteroid 2019 GR Near-Earth Flyby (0.029 AU)
• Apr 08 - Amor Asteroid 5332 Davidaguilar Closest Approach To Earth (1.537 AU)
• Apr 08 - Asteroid 787 Moskva Closest Approach To Earth (1.653 AU)
• Apr 08 - Asteroid 1031 Arctica Closest Approach To Earth (1.906 AU)
• Apr 08 - Asteroid 31 Euphrosyne Closest Approach To Earth (2.241 AU)
• Apr 08 - Jupiter Trojan 1867 Deiphobus At Opposition (4.231 AU)
• Apr 08 - Jupiter Trojan 1172 Aneas At Opposition (4.304 AU)
• Apr 08 - Joint IOP Astroparticle Physics (APP) and IOP High Energy Particle Physics (HEPP) Annual Conference, London, United Kingdom
• Apr 08 - 55th Anniversary (1964), Gemini 1 Launch (Unmanned)
• Apr 08-10 - Gravitational-Wave Open Data Workshop #2, Paris, France
• Apr 08-10 - 2019 NASA Fundamental Physics and Quantum Technology Workshop, Washington DC
• Apr 08-11 - 35th Space Symposium, Colorado Springs, Colorado
• Apr 08-11 - Institute of Navigation (ION) Pacific Positioning Navigation and Timing (PNT) Conference, Honolulu, Hawaii
• Apr 08-12 - ESLAB #53 Conference: The Gaia Universe, Noordwijk, The Netherlands
• Apr 08-12 - Advanced Workshop on Accelerating the Search for Dark Matter with Machine Learning, Trieste, Italy
• Apr 08-12 - Grav19 Conference, Cordoba, Argentina
• Apr 08-12 - Central Asian DUst Conference (CADUC), Dushanbe, Republic of Tajikistan
• Apr 08-12 - Workshop: Very High Energy (VHE) Phenomena Around Supermassive Black Holes, Yerevan, Armenia
• Apr 08-12 - Conference: Prospects of Neutrino Physics, Tokyo, Japan
• Apr 08-12 - Meeting: New Science Enabled by New Techniques in the SKA Era, Cheshire, United Kingdom
• Apr 09 - Comet P/2005 GF8 (LONEOS) At Opposition (2.095 AU)
• Apr 09 - Comet 373P/Rinner Perihelion (2.313 AU)
• Apr 09 - Apollo Asteroid 2019 FU Near-Earth Flyby (0.014 AU)
• Apr 09 - Aten Asteroid 2014 UR Near-Earth Flyby (0.033 AU)
• Apr 09 - Apollo Asteroid 410777 (2009 FD) Closest Approach To Earth (0.230 AU)
• Apr 09 - Asteroid 8625 Simonhelberg Closest Approach To Earth (1.816 AU)
• Apr 09 - Asteroid 1381 Danubia Closest Approach To Earth (1.939 AU)
• Apr 09 - Asteroid 4321 Zero Closest Approach To Earth (2.936 AU)
• Apr 09 - Kuiper Belt Object 523693 (2014 FT71) At Opposition (46.587 AU)
• Apr 09 - 25th Anniversary (1994), STS-59 Launch (Space Shuttle Columbia, Spacelab)
• Apr 09 - Mel Apt's 95th Birthday (1924)
• Apr 09 - 100th Anniversary (1919), Cumberland Falls Meteorite Fall in Kentucky
• Apr 09 - James McDonnell's 120th Birthday (1899)
• Apr 09-11 - 2019 NASA Land-Cover/Land-Use Change (LCLUC) Program Spring Science Team Meeting, Rockville, Maryland
• Apr 09-12 - European Navigation Conference 2019 (ENC 2019), Warsaw, Poland
• Apr 10 -[Apr 10] ArabSat 6A Falcon Heavy Launch
• Apr 10 - Venus Passes 0.3 Degrees From Neptune
• Apr 10 - Asteroid 2 Pallas Occults UCAC5 542-051155 (9.9 Magnitude Star)
• Apr 10 -[Apr 06] Apollo Asteroid 2019 GQ Near-Earth Flyby (0.013 AU)
• Apr 10 -[Apr 07] Aten Asteroid 2016 GW221 Near-Earth Flyby (0.027 AU)
• Apr 10 - Asteroid 163693 Atira Closest Approach To Earth (0.589 AU)
• Apr 10 - Atira Asteroid 2014 FO47 Closest Approach To Earth (1.262 AU)
• Apr 10 - Asteroid 85197 Ginkgo Closest Approach To Earth (1.526 AU)
• Apr 10 - Asteroid 11814 Schwamb Closest Approach To Earth (2.219 AU)
• Apr 10 - Asteroid 9661 Hohmann Closest Approach To Earth (3.697 AU)
• Apr 10 - Kuiper Belt Object 2013 FS28 At Opposition (83.178 AU)
• Apr 10 - Lecture: Prophets of Doom and the Doom of Prophecy - Planetesimal Dynamics in the Outer Solar System, Ithaca, New York
• Apr 10 -[Apr 07] Colloquium: Radio Emission from SNe Ia, Sydney, Australia
• Apr 10 - John Houbolt's 100th Birthday (1919)
• Apr 10 - Scott Forbush's 115th Birthday (1904)
• Apr 10-11 - 3rd International Conference on Geology & Earth Science, Valencia, Spain
• Apr 10-18 - 16th Baksan School on Astroparticle Physics, Kabardino-Balkaria, Russia
• Apr 11 -[Apr 04] Beresheet, Moon Landing
• Apr 11 - Mercury At Its Greatest Western Elongation (28 Degrees)
• Apr 11 - Asteroid 16 Psyche Occults TYC 6331-01554-1 (10.6 Magnitude Star)
• Apr 11 -[Apr 10] Aten Asteroid 2019 GV5 Near-Earth Flyby (0.004 AU)
• Apr 11 -[Apr 06] Apollo Asteroid 2019 GE1 Near-Earth Flyby (0.010 AU)
• Apr 11 -[Apr 10] Apollo Asteroid 2019 GY5 Near-Earth Flyby (0.015 AU)
• Apr 11 - Amor Asteroid 164215 Doloreshill Closest Approach To Earth (1.328 AU)
• Apr 11 - Asteroid 10204 Turing Closest Approach To Earth (1.929 AU)
• Apr 11 - Asteroid 21811 Burroughs Closest Approach To Earth (2.203 AU)
• Apr 11 - Asteroid 184784 Bettiepage Closest Approach To Earth (2.304 AU)
• Apr 11 - Lecture: Solving the Puzzles of Planet Formation in the Modern Era of Planet-Hunting, Ithaca, New York
• Apr 11 -[Apr 04] Seminar: The Classical Double Copy, Barcelona, Spain
• Apr 11 - Bernhard Schmidt's 140th Birthday (1879)
• Apr 12 -[Apr 05] International Day of Human Space Flight
• Apr 12 -[Apr 05] Yuri's Night: World Space Party
• Apr 12 - Comet P/2015 X1 (PANSTARRS) At Opposition (4.160 AU)
• Apr 12 -[Apr 10] Apollo Asteroid 2019 GC4 Near-Earth Flyby (0.013 AU)
• Apr 12 -[Apr 05] Apollo Asteroid 2019 FB3 Near-Earth Flyby (0.030 AU)
• Apr 12 -[Apr 06] Apollo Asteroid 2019 GQ1 Near-Earth Flyby (0.034 AU)
• Apr 12 -[Apr 10] Apollo Asteroid 2019 GL4 Near-Earth Flyby (0.037 AU)
• Apr 12 - Asteroid 295565 Hannover Closest Approach To Earth (1.953 AU)
• Apr 12 - Asteroid 23469 Neilpeart Closest Approach To Earth (2.185 AU)
• Apr 12 - Amor Asteroid 162011 Konnohmaru Closest Approach To Earth (3.099 AU)
• Apr 12 - Royal Astronomical Society (RAS) Ordinary Meeting, London, United Kingdom
• Apr 12 - Meeting: Flares on the Sun and Stars - Microflares, Megaflares and the Largest Flare of Cycle 24, London, United Kingdom
• Apr 12 - Meeting: Quenching Galaxies at Low and High Redshifts, London, United Kingdom
• Apr 12 - Lecture: NASA's Spitzer Space Telescope - Revealing the Invisible, Pasadena, California
• Apr 12 - Lecture: Can Red Dwarf Stars Host Habitable Planets?, Los Altos, California
• Apr 12 - 170th Anniversary (1849), Annibale de Gasparis' Discovery of Asteroid 10 Hygiea
• Apr 13 - Comet C/2014 C1 (TOTAS) Perihelion (1.684 AU)
• Apr 13 - Comet 103P/Hartley At Opposition (4.239 AU)
• Apr 13 -[Apr 06] Apollo Asteroid 2019 GN Near-Earth Flyby (0.004 AU)
• Apr 13 -[Apr 10] Apollo Asteroid 2019 GO4 Near-Earth Flyby (0.013 AU)
• Apr 13 -[Apr 10] Apollo Asteroid 2019 GN4 Near-Earth Flyby (0.019 AU)
• Apr 13 - Apollo Asteroid 2019 FO1 Near-Earth Flyby (0.037 AU)
• Apr 13 - Amor Asteroid 2019 FH1 Near-Earth Flyby (0.046 AU)
• Apr 13 - Asteroid 6000 United Nations Closest Approach To Earth (2.084 AU)
• Apr 13 -[Apr 10] Galaxy Forum Korea 2019: Busan - Astronomy from the Moon, and Astronomy from Korea, Busan, Korea
• Apr 13 - Lecture: Black Holes - Big, Small, Singlets, Twins, Mt. Tamalpais State Park, California
• Apr 13 - Griffith Observatory Public Star Party, Los Angeles
• Apr 13-16 - American Physical Society (APS) Meeting, Denver, Colorado
• Apr 14 - Apollo Asteroid 2016 FW13 Near-Earth Flyby (0.073 AU)
• Apr 14 - Asteroid 11998 Fermilab Closest Approach To Earth (2.612 AU)
• Apr 14 - Asteroid 7359 Messier Closest Approach To Earth (2.623 AU)
• Apr 14 - Christiaan Huygens' 390th Birthday (1629)
• Apr 14-18 - 73rd International Frequency Control Symposium and 33rd European Frequency and Time Forum, Orlando, Florida
• Apr 14-19 - IAU Symposium 350 on Laboratory Astrophysics, Cambridge, United Kingdom
• Apr 14-19 - Workshop: Probing the Earth and the Universe with Microlocal Analysis, Banff, Canada
• Apr 15 - Comet 49P/Arend-Rigaux At Opposition (2.014 AU)
• Apr 15 - Comet C/2018 F4 (PANSTARRS) At Opposition (3.316 AU)
• Apr 15 - Comet 61P/Shajn-Schaldach At Opposition (4.245 AU)
• Apr 15 - Comet C/2017 F2 (PANSTARRS) Closest Approach To Earth (6.675 AU)
• Apr 15 - Asteroid 8861 Jenskandler Occults HIP 81724 (4.5 Magnitude Star)
• Apr 15 - Asteroid 215423 Winnecke Closest Approach To Earth (1.371 AU)
• Apr 15 - Asteroid 4149 Harrison Closest Approach To Earth (1.387 AU)
• Apr 15 - Asteroid 30857 Parsec Closest Approach To Earth (1.435 AU)
• Apr 15 - Asteroid 46977 Krakow Closest Approach To Earth (2.050 AU)
• Apr 15 - Lecture: Another Pale Blue Dot - Inside the SETI Institute's Search for Exoplanets, Portland, Oregon
• Apr 15 -[Apr 10] Colloquium: Planets Big and Small, Tucson, Arizona
• Apr 15 - Johannes Stark's 145th Birthday (1874)
• Apr 15-17 - ICONS Workshop 2019: Investigating Crusts of Neutron Stars, Amsterdam, The Netherlands
• Apr 15-17 - UK Exoplanet Community Meeting, London, United Kingdom
• Apr 15-17 - 14th Iberian Cosmology Meeting, Bilbao, Spain
• Apr 15-18 - Workshop: Natural and Man-Made Hazards Monitoring by the Sentinel and Other Earth Observation Missions - Current Status and Scientific Gaps, Bern, Switzerland
• Apr 15-19 - Conference: Quantum Gravity in Paris, Paris, France
• Apr 15-19 - Workshop: Atomic Nuclei as Laboratories for BSM Physics, Trento, Italy
• Apr 16 - Asteroid 1584 Fuji Closest Approach To Earth (1.390 AU)
• Apr 16 - Asteroid 129564 Christy Closest Approach To Earth (1.553 AU)
• Apr 16 - Asteroid 2023 Asaph Closest Approach To Earth (2.586 AU)
• Apr 16 - Asteroid 3693 Barringer Closest Approach To Earth (2.731 AU)
• Apr 16 - Dwarf Planet 136108 Haumea At Opposition (49.539 AU)
• Apr 16 - Virtual Seminar: Scientific Analogs and the Development of Human and Robotic Mission Architectures for Solar System Exploration
• Apr 16 -[Apr 05] Webinar: Understanding Past and Future Extreme Events and Their Causes
• Apr 16-17 - 9th International Workshop on Occultation and Eclipse (IWOE9), Dubai, United Arab Emirates
• Apr 16-18 - 36th National Radio Science Conference (NRSC2019), Port Said, Egypt
• Apr 16-19 - Workshop: Precision Era in High Energy Physics (Portoroz 2019), Portoroz, Slovenia
• Apr 17 -[Apr 10] Cygnus CRS-11 (NG-11)/ CAPSat/ HARP/ OPAL/ TJREVERB/ VCC A (Aeternitas)/VCC B (Libertas)/VCC C (Ceres)/ Swiatowid/ KrakSat/ AeroCube 10A & 10B/ SASSI2/ NSLSat 1/ ThinSat 1A-1L Antares 230 Launch (International Space Station)
• Apr 17 - Comet 257P/Catalina At Opposition (2.869 AU)
• Apr 17 - Comet P/2005 Y2 (McNaught) At Opposition (3.766 AU)
• Apr 17 - Asteroid 2579 Spartacus Closest Approach To Earth (1.107 AU)
• Apr 17 - Asteroid 1740 Paavo Nurmi Closest Approach To Earth (1.926 AU)
• Apr 17 - Asteroid 6824 Mallory Closest Approach To Earth (2.700 AU)
• Apr 17 - Colloquium: How Long Does Anthropogenic CO2 Stay in the Atmosphere?, Greenbelt, Maryland
• Arp 17 -[Apr 08] Lecture: Stimulating a Culture of Innovation at The Aerospace Corporation, Pasadena, California
• Apr 17 - 5th Anniversay (2014), LADEE, Moon Impact
• Apr 17 - 55th Anniversary (1964), Jerrie Mock Becomes 1st Woman To Fly Solo Around The World
• Apr 17 - Giovanni Domenico Maraldi's 310th Birthday (1709)
• Apr 17-18 - Meeting: Near Earth Object Observations in the Infrared and Visible Wavelengths, Washington DC
• Apr 18 - Aten Asteroid 2019 FN2 Near-Earth Flyby (0.010 AU)
• Apr 18 - Aten Asteroid 2012 XO134 Near-Earth Flyby (0.038 AU)
• Apr 18 - Asteroid 14764 Kilauea Closest Approach To Earth (0.907 AU)
• Apr 18 - Asteroid 2999 Dante Closest Approach To Earth (1.274 AU)
• Apr 18 - Asteroid 26715 South Dakota Closest Approach To Earth (1.952 AU)
• Apr 18 - Asteroid 40227 Tahiti Closest Approach To Earth (3.347 AU)
• Apr 18 - Lecture: The Future is Cloudy - NASA's Look at Clouds and Climate, Pasadena, California
• Apr 18 - Lecture: A Good Hard Look at Cosmic Supermassive Black Hole Growth, Ithaca, New York
• Apr 18-21 - Space Access 2019 Conference, Silicon Valley, California
• Apr 19 - Comet P/2017 S8 (PANSTARRS) Closest Approach To Earth (2.299 AU)
• Apr 19 - Comet C/2017 X1 (PANSTARRS) Closest Approach To Earth (4.248 AU)
• Apr 19 - Aten Asteroid 522684 (2016 JP) Near-Earth Flyby (0.049 AU)
• Apr 19 - Asteroid 2409 Chapman Closest Approach To Earth (1.588 AU)
• Apr 19 - Asteroid 1489 Attila Closest Approach To Earth (1.776 AU)
• Apr 19 - Asteroid 7000 Curie Closest Approach To Earth (2.063 AU)
• Apr 19 - Lecture: The Future is Cloudy - NASA's Look at Clouds and Climate, Pasadena, California
• Apr 19 - Gertrude Bacon's 145th Birthday (1874)
• Apr 20 - Comet P/2002 EJ57 (LINEAR) At Opposition (2.535 AU)
• Apr 20 - Comet P/2007 Q2 (Gilmore) At Opposition (4.062 AU)
• Apr 20 -[Apr 10] Apollo Asteroid 2019 GZ3 Near-Earth Flyby (0.026 AU)
• Apr 20 - Apollo Asteroid 469219 (2016 HO3) Closest Approach To Earth (0.151 AU)
• Apr 20 - Apollo Asteroid 14827 Hypnos Closest Approach To Earth (1.222 AU)
• Apr 20 - Asteroid 23638 Nagano Closest Approach To Earth (1.323 AU)
• Apr 20 - Asteroid 1913 Sekanina Closest Approach To Earth (2.098 AU)
• Apr 20 - Asteroid 8889 Mockturtle Closest Approach To Earth (2.478 AU)
• Apr 20 - Asteroid 2848 ASP Closest Approach To Earth (2.820 AU)
• Apr 20 - Amor Asteroid 9172 Abhramu Closest Approach To Earth (2.936 AU)
• Apr 20 -[Apr 05] Educators Workshop: Discussing Climate Change Using NASA Data, Pasadena, California
• Apr 20 - Vincenzo Cerulli's 160th Birthday (1859)
• Apr 20-21 - Reference Frames in Practice Seminar, Hanoi, Vietnam
• Apr 21 - Easter Sunday
• Apr 21 - Comet P/2005 GF8 (LONEOS) Closest Approach To Earth (2.077 AU)
• Apr 21 -[Apr 06] Apollo Asteroid 2019 GM Near-Earth Flyby (0.050 AU)
• Apr 21 - Apollo Asteroid 2016 WQ3 Near-Earth Flyby (0.073 AU)
• Apr 21 - Asteroid 5608 Olmos Closest Approach To Earth (1.625 AU)
• Apr 21 - Asteroid 243097 Batavia Closest Approach To Earth (1.688 AU)
• Apr 21 - Asteroid 13667 Samthurman Closest Approach To Earth (1.787 AU)
• Apr 21 - Asteroid 39382 Opportunity Closest Approach To Earth (3.557 AU)
• Apr 21 - Jupiter Trojan 3451 Mentor At Opposition (4.192 AU)
• Apr 21 - Jean-Bapiste Biot's 245th Birthday (1774)
• Apr 21 - Jan van Riebeeck's 400th Birthday (1619)
• Apr 21-25 - Surface Ocean Lower Astmosphere Study (SOLAS) Open Science Conference, Sapporo, Japan
• Apr 22 - Earth Day
• Apr 22 - Lyrids Meteor Shower Peak
• Apr 22 - Comet 17P/Holmes At Opposition (3.400 AU)
• Apr 22 - Comet P/2017 U3 (PANSTARRS) Perihelion (4.444 AU)
• Apr 22 - Amor Asteroid 2019 FV2 Near-Earth Flyby (0.040 AU)
• Apr 22 - Atira Asteroid 2015 DR215 Closest Approach To Earth (1.305 AU)
• Apr 22 - Asteroid 67 Asia Closest Approach To Earth (1.452 AU)
• Apr 22 - Asteroid 11836 Eileen Closest Approach To Earth (2.127 AU)
• Apr 22 - Immanuel Kant's 295th Birthday (1724)
• Apr 22-24 - Workshop: The Deaths and Afterlives of Stars, Baltimore, Maryland
• Apr 22-26 - PHAROS Conference 2019: The Multi-Messenger Physics and Astrophysics of Neutron Stars, Barcelona, Spain
• Apr 22-26 - International Federation of Surveyors (FIG) Working Week, Hanoi, Vietnam
• Apr 22-27 - CosKASI Conference 2019: The Correlated Universe, Jeju Island, South Korea
• Apr 22-27 - 4th Alpine LHC Physics Summit (ALPS2019), Tyrol, Austria
• Apr 23 - Comet P/2010 TO20 (LINEAR-Grauer) At Opposition (4.846 AU)
• Apr 23 - Comet C/2017 F2 (PANSTARRS) At Opposition (6.684 AU)
• Apr 23 -[Apr 10] Apollo Asteroid 2019 GM4 Near-Earth Flyby (0.023 AU)
• Apr 23 - Apollo Asteroid 478784 (2012 UV136) Near-Earth Flyby (0.074 AU)
• Apr 23 - Asteroid 4352 Kyoto Closest Approach To Earth (2.240 AU)
• Apr 23-24 - Outer Planets Assessment Group (OPAG) Steering Committee Meeting, Washington DC
• Apr 23-25 - 4th Group on Earth Observations (GEO) Data Technology Workshop: The ERA of Big EO Data, Vienna, Austria
• Apr 23-26 - 46th IOP Plasma Physics Conference, Leicestershire, United Kingdom
• Apr 23-26 - Workshop: Precision Era in High Energy Physics, Portoroz, Slovenia
• Apr 23-26 - Technical Meeting on Nuclear Data for Anti-neutrino Spectra and Their Applications, Vienna, Austria
• Apr 24 -[Apr 10] Comet P/2019 G1 (PANSTARRS) At Opposition (2.069 AU)
• Apr 24 - Asteroid 3192 A'Hearn Closest Approach To Earth (1.177 AU)
• Apr 24 - Asteroid 69263 Big Ben Closest Approach To Earth (1.427 AU)
• Apr 24 - Asteroid 10001 Palermo Closest Approach To Earth (1.688 AU)
• Apr 24 - Asteroid 76272 De Jong Closest Approach To Earth (2.290 AU)
• Apr 24 - Asteroid 1832 Mrkos Closest Approach To Earth (2.586 AU)
• Apr 24 - Lecture: The NASA Archives - 60 Years in Space, London, United Kingdom
• Apr 24 -[Apr 06] Colloquium: The Star-Formation History of the Universe, Greenbelt, Maryland
• Apr 24-26 - Global Conference on Space for Emerging Countries (GLEC 2019), Marrakech, Morocco
• Apr 24-26 - 2019 Aerosols, Clouds, Precipitation and Climate (ACPC) Workshop, Nanjing, China
• Apr 24-27 - United Nations/China Forum on Space Solutions: Realizing the Sustainable Development Goals, Changsha, China
• Apr 25 - Dragon CRS-17/ OCO-3/ STP-H6 Falcon 9 Launch (International Space Station)
• Apr 25 - Moon Occults Saturn
• Apr 25 - Moon Occults Dwarf Planet Pluto
• Apr 25 - Comet P/2007 S1 (Zhao) At Opposition (4.087 AU)
• Apr 25 - Comet P/2010 TO20 (LINEAR-Grauer) Closest Approach To Earth (4.846 AU)
• Apr 25 - Asteroid 3414 Champollion Closest Approach To Earth (1.313 AU)
• Apr 25 - Asteroid 12608 Aesop Closest Approach To Earth (1.582 AU)
• Apr 25 - Asteroid 9879 Mammuthus Closest Approach To Earth (1.694 AU)
• Apr 25 - Asteroid 3265 Fletcher Closest Approach To Earth (1.725 AU)
• Apr 25 - Asteroid 24750 Ohm Closest Approach To Earth (1.984 AU)
• Apr 25 - Asteroid 10168 Stony Ridge Closest Approach To Earth (2.001 AU)
• Apr 25 - Asteroid 25000 Astrometria Closest Approach To Earth (2.036 AU)
• Apr 25 - Asteroid 1140 Crimea Closest Approach To Earth (2.091 AU)
• Apr 25 - Apollo Asteroid 2101 Adonis Closest Approach To Earth (2.301 AU)
• Apr 25 - Lecture: Polarization by Interstellar Dust -- What Does it Tell Us?, Ithaca, New York
• Apr 25 - 50th Anniversary (1969), Bovedy Meteorite Fall (Hit Store in Ireland)
• Apr 25 - Guglielmo Marconi's 145th Birthday (1874)
• Apr 25-26 - Enabling Multi-Messenger Astrophysics in the Big Data Era Workshop, Baltimore, Maryland
• Apr 25-26 - 4th International Conference on Advanced Spectroscopy, Crystallography, and Applications in Modern Chemistry, Rome, Italy
• Apr 26 - Asteroid 263251 Pandabear Closest Approach To Earth (1.486 AU)
• Apr 26 - Amor Asteroid 4947 Ninkasi Closest Approach To Earth (2.144 AU)
• Apr 26 - Asteroid 1008 La Paz Closest Approach To Earth (2.327 AU)
• Apr 26 - Asteroid 99905 Jeffgrossman Closest Approach To Earth (2.684 AU)
• Apr 26 -[Apr 07] Colloquium: The Impact Hazard from Small Near-Earth Objects: Lessons from Chelyabinsk, Greenbelt, Maryland
• Apr 26 - Owen Richardson's 140th Birthday (1879)
• Apr 27 -[Apr 10] Comet P/2019 G1 (PANSTARRS) Closest Approach To Earth (2.068 AU)
• Apr 27 -[Apr 06] Aten Asteroid 2019 GF1 Near-Earth Flyby (0.012 AU)
• Apr 27 - Apollo Asteroid 3103 Eger Closest Approach To Earth (1.013 AU)
• Apr 27 - Asteroid 2614 Torrence Closest Approach To Earth (1.513 AU)
• Apr 27 - Asteroid 12426 Racquetball Closest Approach To Earth (1.526 AU)
• Apr 27 - Asteroid 5050 Doctorwatson Closest Approach To Earth (1.678 AU)
• Apr 27 - Asteroid 2636 Lassell Closest Approach To Earth (1.832 AU)
• Apr 27 - Patrick Wiggins' 70th Birthday (1949)
• Apr 27-30 -[Apr 03] 156th National Academy of Sciences Annual Meeting, Washington DC
• Apr 28 - Comet P/2014 U4 (PANSTARRS) At Opposition (3.353 AU)
• Apr 28 -[Apr 10] Apollo Asteroid 2019 GX5 Near-Earth Flyby (0.018 AU)
• Apr 28 - Asteroid 10958 Mont Blanc Closest Approach To Earth (1.125 AU)
• Apr 28 - Asteroid 8627 Kunalnayyar Closest Approach To Earth (1.607 AU)
• Apr 28 - Asteroid 3989 Odin Closest Approach To Earth (1.656 AU)
• Apr 28 - Asteroid 9619 Terrygilliam Closest Approach To Earth (1.694 AU)
• Apr 28 - Asteroid 19019 Sunflower Closest Approach To Earth (1.975 AU)
• Apr 28 - Asteroid 4999 MPC Closest Approach To Earth (1.997 AU)
• Apr 28 - Asteroid 6216 San Jose Closest Approach To Earth (2.006 AU)
• Apr 28 - Asteroid 11739 Baton Rouge Closest Approach To Earth (3.912 AU)
• Apr 28 - Francis Baily's 245th Birthday (1774)
• Apr 28-30 - Tal Alexander Workshop: Dynamics and Accretion Near Massive Black Holes, Tel-Aviv, Israel
• Apr 28-May 03 - Workshop: Geometrical Tools for String Cosmology, Banff, Canada
• Apr 28-May 03 - Workshop: Vacuum Fluctuations at Nanoscale and Gravitation - Theory and Experiments, Orosei, Italy
• Apr 29 - Comet P/2017 S8 (PANSTARRS) At Opposition (2.314 AU)
• Apr 29 - Comet C/2016 X1 (Lemmon) Perihelion (7.564 AU)
• Apr 29 - Aten Asteroid 2008 GL20 Near-Earth Flyby (0.084 AU)
• Apr 29 - Asteroid 8952 ODAS Closest Approach To Earth (1.452 AU)
• Apr 29 - Asteroid 1940 Whipple Closest Approach To Earth (2.188 AU)
• Apr 29 - Asteroid 60186 Las Cruces Closest Approach To Earth (2.369 AU)
• Apr 29 - Kuiper Belt Object 42355 Typhon At Opposition (21.207 AU)
• Apr 29 - Lecture: Star-Terrestrial Planet Interaction in Our Solar System and Beyond: Magnetic Fields, Atmospheric Loss, and Prebiotic Chemistry, Ithaca, New York
• Apr 29-May 03 - 6th IAA Planetary Defense Conference, Washington DC
• Apr 29-May 03 - ICTP-Rwanda Joint School on Subseasonal to Seasonal Weather and Climate Prediction, Kigali, Rwanda
• Apr 30 - Comet 250P/Larson Closest Approach To Earth (2.618 AU)
• Apr 30 - Comet 257P/Catalina Closest Approach To Earth (2.843 AU)
• Apr 30 - Comet C/2017 X1 (PANSTARRS) At Opposition (4.264 AU)
• Apr 30 - Asteroid 12524 Conscience Closest Approach To Earth (1.498 AU)
• Apr 30 - Asteroid 1157 Arabia Closest Approach To Earth (2.013 AU)
• Apr 30 - Kuiper Belt Object 2014 FC69 At Opposition (83.997 AU)
• Apr 30 -[Apr 03] Meeting: Climate Intervention Strategies that Reflect Sunlight to Cool Earth, Washington DC
• Apr 30 -[Apr 03] Seminar: Exploring the GAIA view of High-Mass X-ray Binaries, Barcelona, Spain

May 2019

• May ?? - GLONASS-M 758 Soyuz-2.1b/Fregat-M Launch
• May ?? -[Apr 08] MiniCarb (CNGB)/ PAN A & B LauncherOne Launch
• May ?? - Starlink Falcon 9 Launch
• May ?? - RISAT-2B PSLV-XL Launch
• May 01 - Atira Asteroid 2013 JX28 Closest Approach To Earth (0.541 AU)
• May 01 - Asteroid 3953 Perth Closest Approach To Earth (1.610 AU)
• May 01 - Asteroid 631 Philippina Closest Approach To Earth (1.722 AU)
• May 01 - Asteroid 10195 Nebraska Closest Approach To Earth (2.285 AU)
• May 01 - 15th Anniversary (2004), Genesis, Earth Flyby
• May 01 - 60th Anniversary (1959), Goddard Space Flight Center Established
• May 01 - 70th Anniversary (1949), Gerard Kuiper's Discovery of Neptune Moon Nereid
• May 02 - Moon Occults Asteroid 4 Vesta
• May 02 - Asteroid 6790 Pingouin Closest Approach To Earth (1.200 AU)
• May 02 - Amor Asteroid 3122 Florence Closest Approach To Earth (1.379 AU)
• May 02 - Asteroid 3487 Edgeworth Closest Approach To Earth (1.563 AU)
• May 02 - Asteroid 2160 Spitzer Closest Approach To Earth (2.037 AU)
• May 02 - Amor Asteroid 1036 Ganymed Closest Approach To Earth (2.243 AU)
• May 02 - R. Scott Dunbar's 65th Birthday (1952)
• May 03 - Comet 138P/Shoemaker-Levy Perihelion (1.703 AU)
• May 03 - Amor Asteroid 4957 Brucemurray Closest Approach To Earth (1.066 AU)
• May 03 - James Hey's 110th Birthday (1909)
• May 03-05 - 5th International Conference on Geographical Information Systems Theory, Applications and Management (GISTAM 2019), Heraklion, Crete, Greece
• May 04 - Star Wars Day
• May 04 - Comet 306P/LINEAR At Opposition (1.827 AU)
• May 04 - Comet 3D/Biela Closest Approach To Earth (2.294 AU)
• May 04 - Asteroid 4103 Chahine Closest Approach To Earth (1.635 AU)
• May 04 - Asteroid 160512 Franck-Hertz Closest Approach To Earth (2.027 AU)
• May 04 - Centaur Object 471143 Dziewanna At Opposition (35.085 AU)
• May 04 - 30th Anniversary (1989), Magellan Launch (Venus Orbiter)
• May 04 - Fritz von Opel's 120th Birthday (1899)
• May 05 - Space Day
• May 05 - National Astronaut Day
• May 05 - Eta Aquarids Meteor Shower Peak
• May 05 - Comet 102P/Shoemaker At Opposition (3.461 AU)
• May 05 - Comet 186P/Garradd Perihelion (4.389 AU)
• May 05 - Amor Asteroid 2016 GF216 Near-Earth Flyby (0.092 AU)
• May 05 - Amor Asteroid 1980 Tezcatlipoca Closest Approach To Earth (1.244 AU)
• May 05 - Asteroid 84225 Verish Closest Approach To Earth (1.477 AU)
• May 05 - 20th Anniversary (1999), Galileo, Callisto 20 Flyby
• May 05-09 - 10th IVS Technical Operations Workshop, Westford, Massachusetts
• May 05-11 - 13th Spontaneous Workshop: Hot Topics in Modern Cosmology, Cargese, France
• May 06 - Comet P/2019 A8 (PANSTARRS) Closest Approach To Earth (1.646 AU)
• May 06 - Comet P/2012 O2 (McNaught) Perihelion (1.692 AU)
• May 06 - Amor Asteroid 2009 MN8 Near-Earth Flyby (0.076 AU)
• May 06 - Apollo Asteroid 1865 Cerberus Closest Approach To Earth (0.369 AU)
• May 06 - Asteroid 2001 Einstein Closest Approach To Earth (0.859 AU)
• May 06 - Asteroid 18610 Arthurdent Closest Approach To Earth (1.823 AU)
• May 06 - Lecture: Enceladus - Coupled Thermal and Dynamic Evolution, Ithaca, New York
• May 06-08 - Preparing for 4MOST: A Community Workshop Introducing ESO's Next-generation Spectroscopic Survey Facility, Garching, Germany
• May 06-08 - Conference: Recent Progress in Relativistic Astrophysics, Shanghai, China
• May 06-08 - 5th Caribbean Symposium on Cosmology, Gravitation, Nuclear and Astroparticle Physics (STARS 2019), Havana, Cuba
• May 06-08 - 2019 Phenomenology Symposium (PHENO 2019), Pittsburgh, Pennsylvania
• May 06-09 - 1st International Cherenkov Telescope Array Symposium: Exploring the High-Energy Universe with CTA, Bologna, Italy
• May 06-09 - Satellite 2019 Conference, Washington DC
• May 06-10 - NASA Robotic Mining Competition, Cape Canaveral, Florida
• May 06-10 - 12th IAA Symposium on Small Satellites for Earth Observation, Berlin, Germany
• May 06-10 - Workshop: Metals in Galaxies, Near and Far - Looking Ahead, Leiden, The Netherlands
• May 06-10 - United Nations/Romania International Conference on Space Solutions for Sustainable Agriculture and Precision Farming, Cluj, Romania
• May 06-10 - 2nd China-Europe Solar Physics Meeting (CESPM): Advances in Solar and Heliospheric Physics, Hvar, Croatia
• May 06-10 - 9th SKA Pathfinder Radio Continuum Survey Group (SPARCS) Meeting - Pathfinders Get To Work, Lisbon, Portugal
• May 06-10 - Paper-writing Workshop on the Analysis of CORDEX-CORE Climate Projections, Trieste, Italy
• May 06-10 - Joint ICTP-IAEA School on Atomic and Molecular Spectroscopy in Plasmas, Trieste, Italy
• May 06-10 - Course: Space Optics Instrument Design &Technology, Sardinia, Italy
• May 06-31 - Conference: Effective Theories of Quantum Phases of Matter, Stockholm, Sweden
• May 07 - Comet 222P/LINEAR Closest Approach To Earth (1.281 AU)
• May 07 - Comet 312P/NEAT At Opposition (2.832 AU)
• May 07 - Comet 184P/Lovas At Opposition (3.245 AU)
• May 07 - Comet C/2018 F4 (PANSTARRS) Closest Approach To Earth (3.253 AU)
• May 07 - Asteroid 6758 Jesseowens Closest Approach To Earth (1.299 AU)
• May 07-08 - 2019 Midwest Magnetic Fields Meeting, Madison, Wisconsin
• May 07-09 - Workshop: Future of Canadian Radio Astronomy, near Penticton, Canada
• May 08 - Mercury Passes 1.4 Degrees From Uranus
• May 08 - Comet 142P/Ge-Wang At Opposition (4.156 AU)
• May 08 - Amor Asteroid 2014 KQ84 Near-Earth Flyby (0.080 AU)
• May 08 - Asteroid 6128 Lasorda Closest Approach To Earth (1.292 AU)
• May 08 - Asteroid 7645 Pons Closest Approach To Earth (1.560 AU)
• May 08 - Colloquium: The Wonderful World of the Plankton - A Tour from Biochemistry to Space, Greenbelt, Maryland
• May 08-09 - Conference: Copernicus Meets Galileo - Earth Observation - Navigation - GeoIT, Bochum, Germany
• May 08-10 - Argentina Astronomical Infrastructure Workshop, Cordoba, Argentine
• May 09 - Comet P/2017 W3 (Gibbs) Closest Approach To Earth (3.676 AU)
• May 09 - Amor Asteroid 2008 HS3 Near-Earth Flyby (0.037 AU)
• May 09 - Apollo Asteroid 2017 RC Near-Earth Flyby (0.037 AU)
• May 09 - Asteroid 7707 Yes Closest Approach To Earth (1.347 AU)
• May 09 - Asteroid 4738 Jimihendrix Closest Approach To Earth (1.706 AU)
• May 09 - Centaur Object 144908 (2004 YH32) At Opposition (11.457 AU)
• May 09 - Kuiper Belt Object 2010 FX86 At Opposition (45.104 AU)
• May 09 - Lecture: Cubesats, Pasadena, California
• May 09 -Oleg Atkov's 70th Birthday (1949)
• May 09-12 - 6th International Symposium on Strong Electromagnetic Fields and Neutron Stars (SMFNS 2019), Varadero, Cuba
• May 10 - Asteroid 7169 Linda Closest Approach To Earth (1.304 AU)
• May 10 - Asteroid 6594 Tasman Closest Approach To Earth (1.746 AU)
• May 10 - Asteroid 64070 NEAT Closest Approach To Earth (1.997 AU)
• May 10 - Asteroid 3264 Bounty Closest Approach To Earth (2.067 AU)
• May 10 - Asteroid 31000 Rockchic Closest Approach To Earth (2.088 AU)
• May 10 - Royal Astronomical Society (RAS) Ordinary Meeting, London, United Kingdom
• May 10 - Meeting: Neutron Star and Black Hole Binary Mergers - The First Results of the LIGO-Virgo Era, London, United Kingdom
• May 10 - Lecture: Cubesats, Pasadena, California
• May 10 - Lecture: A Star is Born, Pasadena, California
• May 10 - 140th Anniversary (1879), Estherville Meteorite Shower in Iowa
• May 10-13 - Conference: Integrations of Satellite and Ground-Based Observations and Multi-Disciplinarity in Research and Prediction of Different Types of Hazards in Solar System, Valjevo, Serbia
• May 11 - Comet C/2018 W1 (Catalina) Perihelion (1.360 AU)
• May 11 - Comet C/2019 D1 (Flewelling) Perihelion (1.577 AU)
• May 11 - Comet P/2005 T2 (Christensen) At Opposition (2.165 AU)
• May 11 - Comet C/2017 T3 (ATLAS) At Opposition (3.244 AU)
• May 11 - Apollo Asteroid 468005 (2012 XD112) Near-Earth Flyby (0.098 AU)
• May 11 - Asteroid 2867 Steins Closest Approach To Earth (1.262 AU)
• May 11 - Asteroid 1000 Piazzia Closest Approach To Earth (1.470 AU)
• May 11 - Asteroid 12818 Tomhanks Closest Approach To Earth (1.689 AU)
• May 11 - Asteroid 3255 Tholen Closest Approach To Earth (2.312 AU)
• May 11 - Lecture: The Largest 3D Maps of Our Universe, Mt. Tamalpais State Park, California
• May 11 - 10th Anniversary (2009), STS-125 Launch (Space Shuttle Atlantis, Last Hubble Space Telecope Servicing)
• May 11 - Antony Hewish's 95th Birthday (1924)
• May 12 - Comet 250P/Larson At Opposition (2.640 AU)
• May 12 - Comet 138P/Shoemaker-Levy At Opposition (2.706 AU)
• May 12 - Aten Asteroid 2009 FU23 Near-Earth Flyby (0.071 AU)
• May 12 - Aten Asteroid 2100 Ra-Shalom Closest Approach To Earth (0.474 AU)
• May 12 - Asteroid 71000 Hughdowns Closest Approach To Earth (2.167 AU)
• May 12 - Kuiper Belt Object 90568 (2004 GV9) At Opposition (38.611 AU)
• May 12-15 - 6th International Planetary Dunes Workshop, Alamosa, Colorado
• May 12-15 - Multi-Messenger Astronomy with SKA Precursors and Pathfinders, a Capacity Building Workshop, Aveiro, Portugal
• May 12-16 - 8th Meeting on CPT and Lorentz Symmetry, Bloomington, Indiana
• May 12-18 - Conference: New Trends in High-Energy Physics, Odessa, Ukraine
• May 13 - Comet 74P/Smirnova-Chernykh Closest Approach To Earth (2.863 AU)
• May 13 - Comet P/2007 R2 (Gibbs) At Opposition (2.970 AU)
• May 13 - Comet 162P/Siding Spring At Opposition (3.261 AU)
• May 13 - Comet 224P/LINEAR-NEAT At Opposition (3.817 AU)
• May 13 - Comet 316P/LONEOS-Christensen At Opposition (3.913 AU)
• May 13 - Comet P/2015 Q1 (Scotti) At Opposition (4.063 AU)
• May 13 - Asteroid 5720 Halweaver Closest Approach To Earth (1.367 AU)
• May 13-14 - Workshop: Herschel Ten Years After Launch - Science and Celebration, Madrid, Spain
• May 13-15 - LISA Waveform Working Group Meeting, Potsdam, Germany
• May 13-16 - 2nd Hermann Minkowski Meeting on the Foundations of Spacetime Physics, Albena, Bulgaria
• May 13-17 - EU Green Week 2019, Brussels, Belgium
• May 13-17 - Conference: New Horizons in Planetary Systems, Victoria, Canada
• May 13-17 - Workshop: ExoComets - Understanding the Composition of Planetary Building Blocks, Leiden, The Netherlands
• May 13-17 - Living Planet Symposium 2019, Milan, Italy
• May 13-17 - Conference: Gamma-Ray Bursts and Related Astrophysics in Multi-Messenger Era, Nanjing, China
• May 13-17 - Workshop: SN Neutrinos at the Crossroads - Astrophysics, Oscillations, and Detection, Trento, Italy
• May 13-17 - Applied Space Environments Conference (ASEC), Los Angeles, California
• May 13-17 - 4th International Conference on Nuclear Structure and Dynamics (NSD2019), Venice, Italy
• May 13-17 - 6th EIROforum School on Instrumentation (ESI 2019), Noordwijk, The Netherlands
• May 13-24 - Les Houches School on Plasma Physics - The Multiple Approaches to Plasma Physics from Laboratory to Astrophysics, Les Houches, France
• May 14 - Comet C/2018 V1 (Machholz-Fujikawa-Iwamoto) Closest Approach To Earth (2.292 AU)
• May 14 - Comet C/2017 M4 (ATLAS) Closest Approach To Earth (2.481 AU)
• May 14 - Comet 58P/Jackson-Neujmin At Opposition (2.763 AU)
• May 14 - Comet 141P-D/Machholz At Opposition (3.731 AU)
• May 14 - Comet C/2016 R2 (PANSTARRS) At Opposition (4.003 AU)
• May 14 - Comet P/2008 QP20 (LINEAR-Hill) At Opposition (4.123 AU)
• May 14 - Centaur Object 65489 Ceto At Opposition (38.592 AU)
• May 14 - 10th Anniversary (2009), Herschel/Planck Launch
• May 14 - 70th Anniversary (1949), Comet 147P/Kushida-Muramatsu Captured Into Jupiter Orbit
• May 14 - 155th Anniversary (1864), Orgueil Meteorite Shower in France
• May 14 - Peder Horrebow's 340th Birthday (1679)
• May 14-16 - The Humans to Mars Summit 2019, Washington DC
• May 14-16 - Multiple Mirror Telescope (MMT) 40th Anniversary Symposium, Tucson, Arizona
• May 14-16 - SDB Day 2019: Satellite-Derived Bathymetry Technology and User Forum, Queensland, Australia
• May 14-17 - 63rd Meeting of the Italian Astronomical Society: 20 years of INAF, Italian Astronomy Between Present and Future, Rome, Italy
• May 15 - Comet 183P/Korlevic-Juric Closest Approach To Earth (3.255 AU)
• May 15 - Comet 141P-A/Machholz At Opposition (3.673 AU)
• May 15 - Comet 141P/Machholz At Opposition (3.674 AU)
• May 15 - Comet P/2004 R3 (LINEAR-NEAT) At Opposition (3.937 AU)
• May 15 - Comet 265P/LINEAR At Opposition (4.082 AU)
• May 15 - Atira Asteroid 434326 (2004 JG6) Closest Approach To Earth (0.991 AU)
• May 15 - Asteroid 9998 ISO Closest Approach To Earth (1.320 AU)
• May 15 - Asteroid 67085 Oppenheimer Closest Approach To Earth (1.691 AU)
• May 15 - Colloquium: Tambora and The Year Without a Summer, 1816, Greenbelt, Maryland
• May 15 - Frank Culbertson's 70th Birthday (1949)
• May 15-16 - 10th Electronic Materials and Processes for Space Workshop (EMPS), Villepinte, France
• May 15-16 - Conference: Defence Satellites 2019, Munich, Germany
• May 15-16 - 9th Forum for New Leaders in Space Science, Bejing, China
• May 15-18 - First Frontiers Summer School, East Lansing, Michigan
• May 16 - RADARSAT Constellation (RCM) Falcon 9 Launch
• May 16 - 50th Anniversary (1969), Venera 5, Venus Impact
• May 16 - Asteroid 15845 Bambi Closest Approach To Earth (1.550 AU)
• May 16 - Asteroid 10637 Heimlich Closest Approach To Earth (2.181 AU)
• May 16 - Kuiper Belt Object 65407 (2002 RP120) At Opposition (30.810 AU)
• May 16 - Roy Kerr's 85th Birthday (1934)
• May 16-17 - Spring Workshop on Gravity and Cosmology: Inflation and Primordial Black Hole, Warsaw, Poland
• May 17 - 50th Anniversary (1969), Venera 6, Venus Impact
• May 17 - Comet 74P/Smirnova-Chernykh At Opposition (2.865 AU)
• May 17 -[Apr 06] Apollo Asteroid 2019 GT1 Near-Earth Flyby (0.016 AU)
• May 17 - Amor Asteroid 153591 (2001 SN263) (2 Moons) Closest Approach To Earth (1.268 AU)
• May 17 - Asteroid 3263 Bligh Closest Approach To Earth (1.539 AU)
• May 17 - Asteroid 20 Massalia Closest Approach To Earth (1.617 AU)
• May 17 - Asteroid 250840 Motorhead Closest Approach To Earth (2.481 AU)
• May 17 - Asteroid 325 Heidelberga Closest Approach To Earth (2.724 AU)
• May 17 - Kuiper Belt Object 2015 BP519 At Opposition (52.674 AU)
• May 17 - 20th Anniversary (1999), STS-96 Launch (Space Shuttle Discovery, International Space Station)
• May 17-20 - International Workshop on Astrochemistry 2019, Xi'an, China
• May 18 - Blue Moon
• May 18 - Venus Passes 1.1 Degrees From Uranus
• May 18 - 50th Anniversary (1969), Apollo 10 Launch
• May 18 - Comet P/2003 T12 (SOHO) At Opposition (2.640 AU)
• May 18 - Comet 206P/Barnard-Boattini At Opposition (3.671 AU)
• May 18 - Apollo Asteroid 2012 KT12 Near-Earth Flyby (0.008 AU)
• May 18 - Asteroid 27320 Vellinga Closest Approach To Earth (1.066 AU)
• May 18 - Asteroid 12927 Pinocchio Closest Approach To Earth (1.581 AU)
• May 18 - Asteroid 19148 Alaska Closest Approach To Earth (1.899 AU)
• May 18 - Neptune Trojan 2010 TS191 At Opposition (29.665 AU)
• May 18 - Griffith Observatory Public Star Party, Los Angeles
• May 18-19 - Jet Propulsion Laboratory Open House: Explore JPL, Pasadena, California
• May 18-21 - Geoscience and Society Summit, Stockholm, Sweden
• May 19 - Moon Occults Dwarf Planet Ceres
• May 19 - Comet P/2018 C1 (Lemmon-Read) At Opposition (3.077 AU)
• May 19 - Comet 183P/Korlevic-Juric At Opposition (3.257 AU)
• May 19 - Asteroid 9951 Tyrannosaurus Closest Approach To Earth (1.232 AU)
• May 19 - Asteroid 2022 West Closest Approach To Earth (2.006 AU)
• May 19 - Asteroid 742 Edisona Closest Approach To Earth (2.114 AU)
• May 19 - Kuiper Belt Object 2015 KH162 At Opposition (58.988 AU)
• May 19 - 15th Anniversary (2004), Hayabusa (MUSES-C), Earth Flyby
• May 19 - Dick Scobee's 80th Birthday (1939)
• May 19-22 - International Workshop on Gravity, Electrical & Magnetic Methods and Their Applications (GEM 2019), Xi'an, China
• May 19-22 - Canada-France-Hawaii Telescope 12th Users' Meeting, Montreal, Canada
• May 19-23 - Workshop: Low Radioactivity Techniques (LRT) 2019, Spanish Pyrenees, Spain
• May 19-25 - Gravitational-Wave Advanced Detector Workshop (GWADW2019), Elba Island, Italy
• May 20 - Comet C/2017 M4 (ATLAS) At Opposition (2.490 AU)
• May 20 - Comet P/2017 W3 (Gibbs) At Opposition (3.692 AU)
• May 20 - Apollo Asteroid 68950 (2002 QF15) Near-Earth Flyby (0.088 AU)
• May 20 - Apollo Asteroid 2017 QP16 Near-Earth Flyby (0.099 AU)
• May 20 - Asteroid 736 Harvard Closest Approach To Earth (1.234 AU)
• May 20-21 - 2nd European Physics Congress, Berlin, Germany
• May 20-22 - 2019 ESA Workshop on Aerospace EMC, Milano, Italy
• May 20-22 - Workshop: IRN TeraScale@Annecy, Annecy, France
• May 20-23 - Conference: Exploring the Infrared Universe - The Promise of SPICA, Island of Crete, Greece
• May 20-23 - Conference: SST@Asia - Exploring the Deep, Wide, Fast Universe, Sydney, Australia
• May 20-23 - Conference: Multi-spin Galaxies 2019, Asiago, Italy
• May 20-23 - 5th ABoVE Science Team Meeting, La Jolla, California
• May 20-23 - 14th International Astronomical Consortium for High Energy Calibration (IACHEC) Meeting, Kanagawa, Japan
• May 20-24 - 2019 Cassini Science Symposium, Laurel, Maryland
• May 20-24 - Conference: Planet-Star Connections in the Era of TESS and Gaia, Santa Barbara, California
• May 20-24 - Workshop on Polarization in Protoplanetary Disks and Jets, Catalonia, Spain
• May 20-24 - Workshop: Electron-Capture-Initiated Stellar Collapse, Leiden, The Netherlands
• May 20-24 - International Space Weather Initiative Workshop, Trieste, Italy
• May 20-24 - F.O.E. Fifty-One Erg Supernova Conference, Raleigh, North Carolina
• May 20-24 - Conference: 2019 JINA-CEE Frontiers in Nuclear Astrophysics, East Lansing, Michigan
• May 20-24 - Workshop: Star Formation, Bern, Switzerland
• May 20-24 - Workshop: Data-Driven Approaches to Searches for the Technosignatures of Advanced Civilizations, Pasadena, California
• May 20-24 - 6th FAIR Next Generation Scientists Workshop 2019 (FAIRNESS 2019), Genova, Italy
• May 20-24 - 27th International Conference on Supersymmetry and Unification of Fundamental Interactions, Corpus Christi, Texas
• May 20-24 - 5th AIAA/CEAS Aeroacoustics Conference, Delft, The Netherlands
• May 20-24 - Advanced Course on Space Optics for Professionals: Spaceborne Lidars, Crete, Greece
• May 20-Jun 07 - Program: The Mysterious Universe: Dark Matter - Dark Energy - Cosmic Magnetic Fields, Mainz, Germany
• May 21 - Dwarf Planet Ceres Occults UCAC5 363-073920 (11.5 Magnitude Star)
• May 21 - Apollo Asteroid 217628 Lugh Closest Approach To Earth (1.388 AU)
• May 21 - Asteroid 9618 Johncleese Closest Approach To Earth (1.451 AU)
• May 21 - Asteroid 1197 Rhodesia Closest Approach To Earth (1.549 AU)
• May 21 - Asteroid 171183 Haleakala Closest Approach To Earth (1.917 AU)
• May 21 -[Apr 05] Seminar: Primordial Black Holes' Dark Dresses - Roads Towards a Discovery and Possible Implications, Barcelona, Spain
• May 21 - C. Michelle Olmstead's 50th Birthday (1969)
• May 21-22 - Space Tech Expo, Pasadena, California
• May 21-22 - NOAA ESRL Global Monitoring Annual Conference 2019, Boulder, Colorado
• May 21-23 - 2019 European Lunar Symposium, Manchester, United Kingdom
• May 21-23 -[Apr 08] NASA Biological Diversity and Ecological Forecasting Annual Team Meeting, Arlington, Virginia
• May 21-24 - 7th International Conference Space Technologies: Present and Future, Dnepr, Ukraine
• May 22 - Moon Occults Saturn
• May 22 - Comet 322P/SOHO At Opposition (1.128 AU)
• May 22 - Comet P/2019 A8 (PANSTARRS) At Opposition (1.679 AU)
• May 22 - Comet 312P/NEAT Closest Approach To Earth (2.804 AU)
• May 22 - Comet 16P/Brooks At Opposition (3.593 AU)
• May 22 - Comet 158P/Kowal-LINEAR At Opposition (3.861 AU)
• May 22 - Asteroid 9341 Gracekelly Closest Approach To Earth (1.523 AU)
• May 22 - Asteroid 8256 Shenzhou Closest Approach To Earth (1.733 AU)
• May 22 - Asteroid 316201 Malala Closest Approach To Earth (2.743 AU)
• May 22 - Peter Kusnirak's 45th Birthday (1974)
• May 22-23 - 7th International Conference on Earth Science, Climate Change & Space Technology, Rome, Italy
• May 22-24 - International Association of Geodesy (IAG) Reference Frame Sub-Commission for Europe (EUREF) 2019 Symposium, Tallinn, Estonia
• May 22-24 - Joint Urban Remote Sensing Event, Vannes, France
• May 23 - Blagovest-14L Proton-M Launch
• May 23 - Moon Occults Dwarf Planet Pluto
• May 23 - Comet 158P/Kowal-LINEAR Closest Approach To Earth (3.861 AU)
• May 23 - Apollo Asteroid 4179 Toutatis Closest Approach To Earth (2.978 AU)
• May 23 - 115th Anniversary (1904), 1st Flight of Wright Brother's 2nd Plane (Flyer II)
• May 24 - Comet C/2018 R3 (Lemmon) Closest Approach To Earth (1.922 AU)
• May 24 - Comet P/2008 WZ96 (LINEAR) At Opposition (3.764 AU)
• May 24 - Asteroid 2956 Yeomans Closest Approach To Earth (1.503 AU)
• May 24 - Asteroid 172996 Stooke Closest Approach To Earth (1.612 AU)
• May 24 - Asteroid 12104 Chesley Closest Approach To Earth (1.931 AU)
• May 24 - Asteroid 189202 Calar Alto Closest Approach To Earth (2.073 AU)
• May 24 -[Apr 09] NASA Marine BONE All Hands Meeting, Arlington, Virginia
• May 24 - Ivan Yarkovsky's 175th Birthday (1844)
• May 24 - William Gilbert's 475th Birthday (1544)
• May 25 - Towel Day - Annual Tribute to Douglas Adams
• May 25 - Comet 363P/Lemmon Closest Approach To Earth (2.718 AU)
• May 25 - Aten Asteroid 66391 (1999 KW4) Near-Earth Flyby (0.035 AU)
• May 25 - Aten Asteroid 2015 KQ18 Near-Earth Flyby (0.027 AU)
• May 25 - Igor Sikorsky's 130th Birthday (1889)
• May 25 - John Tebbutt's 185th Birthday (1834)
• May 26 - Comet P/2005 T2 (Christensen) Closest Approach To Earth (2.133 AU)
• May 26 - Asteroid 4345 Rachmaninoff Closest Approach To Earth (1.943 AU)
• May 26 - Amor Asteroid 16064 Davidharvey Closest Approach To Earth (2.163 AU)
• May 26 - Otto Neugebauer's 120th Birthday (1899)
• May 26 - Henri Farman's 145th Birthday (1874)
• May 26-30 - Conference: Eddington at Sundy - From Einstein and Eddington to LIGO: 100 Years of Gravitational Light Deflection, Principe Island, Sao Tome
• May 26-30 - Japan Geoscience Union Meeting 2019 (JpGU2019), Chiba, Japan
• May 26-Jun 09 - Workshop: String Theory and the Hidden Universe, Aspen, Colorado
• May 26-Jun 17 - Workshop: Progress after Impasse: New Frontiers in Dark Matter, Aspen, Colorado
• May 27 - AMOS 17 Falcon 9 Launch
• May 27 - Asteroid 116939 Jonstewart Closest Approach To Earth (1.033 AU)
• May 27 - Dwarf Planet Ceres Closest Approach To Earth (1.751 AU)
• May 27 - Asteroid 697 Galilea Closest Approach To Earth (1.964 AU)
• May 27-29 - 26th Saint Petersburg International Conference on Integrated Navigation Systems, St. Petersburg, Russia
• May 27-31 - IAU Symposium 351: Star Clusters - From the Milky Way to the Early Universe, Bologna, Italy
• May 27-31 - Workshop on Ionospheric Forecasting for GNSS Operations in Developing Countries: Findings and Challenges, Trieste, Italy
• May 27-31 - 7th Workshop on Nuclear Level Density and Gamma Strength, Oslo, Norway
• May 27-31 - Souriau 2019 Conference, Paris, France
• May 27-31 - International Symposium on Electromagnetic Theory (EMTS 2019), San Diego, California
• May 27-31 - Workshop: Interpreting the LHC Run 2 Data and Beyond, Trieste, Italy
• May 27-31 - 3rd Advanced School on Exoplanetary Science: Demographics of Exoplanetary Systems, Vietri sul Mare, Italy
• May 27-Jun 01 - International School on Amplitudes and Cosmology, Holography and Positive Geometries, Lecce, Italy
• May 27-Jun 05 - International Young Scientists School and Conference on Computational Information Technologies for Environmental Sciences (CITES-2019), Moscow, Russia
• May 27-Jun 06 - School: Cosmic Explosions 2019, Corsica, France
• May 27-Jun 07 - 5th Workshop on Water Resources in Developing Countries: Hydroclimate Modeling and Analysis Tools, Trieste, Italy
• May 27-Jun 21 - Workshop: The Weak Scale at a Crossroads - Lessons from the LHC and Beyond, Munich, Germany
• May 28 - Comet P/2007 R2 (Gibbs) Closest Approach To Earth (2.937 AU)
• May 28 - Asteroid 9954 Brachiosaurus Closest Approach To Earth (2.110 AU)
• May 28 - Plutino 469987 (2006 HJ123) At Opposition (32.782 AU)
• May 28 - 60th Anniversary (1959), Jupiter C Launch Of Two Monkeys (Able & Baker)
• May 28 - Milutin Milankovic's 140th Birthday (1879)
• May 28 - Edward Charles Howard's 245th Birthday (1774)
• May 28-29 - 172nd European Association of Agricultural Economists (EAAE) Seminar, Brussels, Belgium
• May 28-30 - 1st General Assembly of the European Astrobiology Institute, Liblice, Czech Republic
• May 28-Jun 01 - 18th Reuven Ramaty High Energy Solar Spectroscopic Imager (RHESSI) Workshop, Minneapolis, Minnesota
• May 28-Jun 04 - International School on Astro-Particle Physics (ISAPP 2019): The Dark Side of the Universe, Heidelberg, Germany
• May 29 - 100th Anniversary (1919), Solar Eclipse Confirms Einstein's General Theory Of Relativity
• May 29 - Comet C/2019 D1 (Flewelling) Closest Approach To Earth (1.566 AU)
• May 29 - Comet 306P/LINEAR Closest Approach To Earth (1.748 AU)
• May 29 - Comet 3D/Biela At Opposition (2.381 AU)
• May 29 - Aten Asteroid 2003 LH Near-Earth Flyby (0.040 AU)
• May 29 - 45th Anniversary (1974), Luna 22 Launch (Soviet Moon Orbiter)
• May 29 - Peter Higgs' 90th Birthday (1929)
• May 29-30 - World Congress on Earth & Environmental Science, Singapore
• May 29-30 - Memorial Symposium to Honor Riccardo Giacconi, Washington DC
• May 30 - Moon Occults Asteroid 4 Vesta
• May 30 - Comet 147P/Kushida-Muramatsu At Opposition (3.818 AU)
• May 30 - Apollo Asteroid 2011 HP Near-Earth Flyby (0.031 AU)
• May 30 - Amor Asteroid 52387 Huitzilopochtli Closest Approach To Earth (0.500 AU)
• May 30 - Asteroid 1631 Kopff Closest Approach To Earth (1.143 AU)
• May 30 - Asteroid 6470 Aldrin Closest Approach To Earth (1.530 AU)
• May 30 - Kuiper Belt Object 2010 JO179 At Opposition (58.249 AU)
• May 30 - Ken Lawrence's 55th Birthday (1964)
• May 30 - Claudia Alexander's 60th Birthday (1959)
• May 30 - Alexey Leonov's 85th Birthday (1934)
• May 30-31 - 1st CoCo Meeting: Cosmology in Colombia, Bogata, Colombia
• May 31 - Yamal 601 Proton-M/Briz-M P4 Launch
• May 31 - Comet 191P/McNaught At Opposition (3.202 AU)
• May 31 - Comet 156P/Russell-LINEAR At Opposition (3.344 AU)
• May 31 - Comet 108P/Ciffreo At Opposition (4.225 AU)
• May 31 - Dwarf Planet Ceres Occults UCAC5 362-071809 (12.1 Magnitude Star)
• May 31 - Asteroid 63163 Jerusalem Closest Approach To Earth (1.486 AU)
• May 31 - Asteroid 301 Bavaria Closest Approach To Earth (1.543 AU)
• May 31 - Asteroid 3001 Michelangelo Closest Approach To Earth (1.556 AU)
• May 31 - Asteroid 4327 Ries Closest Approach To Earth (1.629 AU)
• May 31 - Asteroid 24101 Cassini Closest Approach To Earth (2.496 AU)
• May 31 - Plutino 38628 Huya At Opposition (27.684 AU)
• May 31 - Contest: Mechanical Maker Challenge
• May 31-Jun 01 - 22nd Eastern Gravity Meeting, Dartmouth, Massachussetts
• May 31-Jun 02 - Event: Mars Celebration, Mars, Pennsylvania
• May 31-Jun 03 - International Venus Conference 2019, Niseko, Japan

June 2019

• Jun ?? - New Generation Manned Spacecraft CZ-5B Launch (China)
• Jun ?? - Uzlovoy Module (Progress M-UM) Soyuz-2.1b Launch (International Space Station)
• Jun ?? - CBERS 4A/Ziyuan 1E2 CZ-4B Launch
• Jun ?? - Gonets M14-M16/ BLITS-M1 & M2/Radio-2017 Rokot-KM Launch
• Jun ?? - CAS 6 CZ-11 Launch
• Jun ?? - Arktika-M 1 Soyuz Launch
• Jun ?? - Landmapper BC5/BC6 Soyuz-2.1/Fregat-M Launch
• Jun ?? - STP-2 Falcon Heavy Launch
• Jun ?? - Eutelsat 5 West B/ Mission Extension Vehicle (MEV-1) Proton-M/Briz-M P4 Launch
• Jun ?? -[Apr 07] Cartosat-3/ NEMO-AM PSLV-CA Launch
• Jun ?? -[Apr 08] DSX/ FORMOSAT 7A-77F/ GPIM/ OTB/ FalconSat 6/ NPSat 1/ Oculus-ASR/ Prox 1/ LightSail-B/ Nanosat 7/ SSTE 4/SET 1/ ARMADILLO/ Falconsat 7 (Peregrinne)/ TBEx A & B/ Prometheus 2-1 - 2-8/ TEPCE 1 & 2/ CP 9/ StangSat/ DOTS-X Falcon Heavy Launch
• Jun 01 - Comet 230P/LINEAR At Opposition (4.278 AU)
• Jun 01 - Asteroid 4923 Clarke Closest Approach To Earth (0.840 AU)
• Jun 01 - Amor Asteroid 3551 Verenia Closest Approach To Earth (1.389 AU)
• Jun 01 - Asteroid 3123 Dunham Closest Approach To Earth (1.472 AU)
• Jun 01 - Neptune Trojan 2010 TT191 At Opposition (33.195 AU)
• Jun 01 - Plutino 470308 (2007 JH43) At Opposition (39.548 AU)
• Jun 01-02 - 39th British Interplanetary Society (BIS) Russian/Sino Technical Forum 2019, London, United Kingdom
• Jun 02 - Asteroid 1024 Hale Closest Approach To Earth (2.080 AU)
• Jun 02-07 - 31st Rencontres de Blois, Blois, France
• Jun 02-07 - INFN School Of Statistics, Salerno, Italy
• Jun 02-23 - Workshop: The Turbulent Life of Cosmic Baryons, Aspen, Colorado
• Jun 03 - Comet 202P/Scotti At Opposition (3.922 AU)
• Jun 03 - Asteroid 2398 Jilin Closest Approach To Earth (1.860 AU)
• Jun 03 - Asteroid 11908 Nicaragua Closest Approach To Earth (1.867 AU)
• Jun 03 - Asteroid 35334 Yarkovsky Closest Approach To Earth (2.117 AU)
• Jun 03 - Asteroid 1877 Marsden Closest Approach To Earth (2.402 AU)
• Jun 03 - Teleconference: Astronomy and Astrophysics Advisory Committee (AAAC) Meeting
• Jun 03 -[Apr 08] Colloquium: Opportunities, Dangers and Destiny in the Solar System... and Beyond, Greenbelt, Maryland
• Jun 03 - David Gregory's 360th Birthday (1659)
• Jun 03-05 - ALMA Development Workshop, Garching, Germany
• Jun 03-05 - 9th Iberian Gravitational Waves Meeting, Santiago de Compostela, Spain
• Jun 03-07 - IAU Symposium 352: Uncovering Early Galaxy Evolution in the ALMA and JWST Era, Viana do Castelo, Portugal
• Jun 03-07 - Conference: Linking the Milky Way and Nearby Galaxies - The ISM and Star Formation from Cold Cores to Kpc Scales, Helsinki, Finland
• Jun 03-07 - 2019 Planetary Dynamics Conference, Heidelberg, Germany
• Jun 03-07 - Conference: Partially Ionised Plasmas in Astrophysics (PIPA2019), Palma de Mallorca, Spain
• Jun 03-07 - 22nd International Conference From the Planck Scale to the Electroweak Scale, Granada, Spain
• Jun 03-07 - Workshop: What Matter(s) Between Galaxies - Unraveling the Knots in the Cosmic Web, Abbazia di Spineto, Italy
• Jun 03-07 - 15th Patras Workshop on Axions, WIMPs and WISPs, Frieburg, Germany
• Jun 03-07 - Conference: mm Universe @ NIKA2 - Observing the Millimeter Universe with the NIKA2 Camera, Grenoble, France
• Jun 03-07 - International Conference on the Structure and the Interactions of the Photon (PHOTON 2019), Frascati, Italy
• Jun 03-07 - International Conference on Proton-Emitting Nuclei (PROCON2019), East Lansing, Michigan
• Jun 03-07 - 47th International Meeting on Fundamental Physics (IMFP), Aranjuez, Spain
• Jun 03-07 - International School of Space Science: Space Astrometry For Astrophysics, L'Aquila, Italy
• Jun 03-07 - Invisibles 19 School, Canfranc, Spain
• Jun 03-07 - Summer School in Statistics for Astronomers XV, University Park, Pennsylvania
• Jun 03-08 - Conference: Supernova Remnants II - An Odyssey in Space after Stellar Death, Chania, Crete, Greece
• Jun 03-08 - 27th International Workshop on Weak Interactions and Neutrinos (WIN2019), Bari, Italy
• Jun 03-09 - SEENET-MTP Balkan School on High Energy and Particle Physics: Theory and Phenomenology (BS2019), Ioannina, Epirus, Greece
• Jun 03-14 - Workshop: Gravitational Wave Challenges and Cosmology, Natal, Brazil
• Jun 03-28 - Program: Zoom-In and Out - From the Interstellar Medium to the Large Scale Structure of the Universe, Stockholm, Sweden
• Jun 04 - Comet P/2003 T12 (SOHO) Closest Approach To Earth (2.596 AU)
• Jun 04 - Comet 304P/Ory At Opposition (2.761 AU)
• Jun 04 - Aten Asteroid 2014 JU15 Near-Earth Flyby (0.100 AU)
• Jun 04-06 - 4th ESA CubeSat Industry Days, Noordwijk, The Netherlands
• Jun 04-07 - Workshop: The Main Belt - A Gateway to the Formation and Early Evolution of the Solar System, Villasimius, Italy
• Jun 04-07 - 1st National Solar Observatory Community Science Plan (NCSP) Data Training Workshop: An Introduction to DKIST Data, Boulder, Colorado
• Jun 04-08 - Joint Conference of the Sub-Regional European Astronomical Committee (SPEAC) and the Bulgarian Astronomical Society (BgAS), Sofia, Bulgaria
• Jun 05 - Comet 222P/LINEAR Perihelion (0.828 AU)
• Jun 05 - Comet P/2006 H1 (McNaught) At Opposition (1.882 AU)
• Jun 05 - Asteroid 4151 Alanhale Closest Approach To Earth (2.266 AU)
• Jun 05 - John Couch Adams' 200th Birthday (1819)
• Jun 05-07 - Planetary Exploration Horizon 2061 Synthesis Workshop, Toulouse, France
• Jun 05-07 - 24th Itzykson Meeting: Effective Field Theorie in Cosmology, Gravitation and Particle Physics, Gif-sur-Yvette, France
• Jun 06 - Comet 58P/Jackson-Neujmin Closest Approach To Earth (2.689 AU)
• Jun 06 -[Apr 10] Comet P/2019 G1 (PANSTARRS) Perihelion (3.050 AU)
• Jun 06 - Aten Asteroid 2014 MF18 Near-Earth Flyby (0.022 AU)
• Jun 06 - Asteroid 1217 Maximiliana Closest Approach To Earth (0.992 AU)
• Jun 06 - Kuiper Belt Object 278361 (2007 JJ43) At Opposition (39.923 AU)
• Jun 07 - Comet C/2018 R3 (Lemmon) Perihelion (1.291 AU)
• Jun 07 - Comet P/2019 B2 (Groeller) Perihelion (2.419 AU)
• Jun 07 - Comet C/2018 KJ3 (Lemmon) At Opposition (2.747 AU)
• Jun 07 - Comet 113P/Spitaler At Opposition (4.177 AU)
• Jun 07 - Apollo Asteroid 2017 BM93 Near-Earth Flyby (0.086 AU)
• Jun 07 - Asteroid 13801 Kohlhase Closest Approach To Earth (1.685 AU)
• Jun 07 - Asteroid 4169 Celsius Closest Approach To Earth (2.750 AU)
• Jun 07 - Meeting: Jim Hartle - A Man With No Boundaries, Santa Barbara, California
• Jun 07 - Lecture: We Were the Discoverers - Witnessing the Exoplanet Revolution, Pasadena, California
• Jun 07-08 - Kouchibouguac Spring Star Fest, Kouchibouguac National Park, Canada
• Jun 08 - World Oceans Day
• Jun 08 - Amor Asteroid 189011 Ogmios Closest Approach To Earth (0.697 AU)
• Jun 08 - Asteroid 2322 Kitt Peak Closest Approach To Earth (1.339 AU)
• Jun 08 - Asteroid 58671 Diplodocus Closest Approach To Earth (1.345 AU)
• Jun 08 - Asteroid 70783 Kenwilliams Closest Approach To Earth (1.894 AU)
• Jun 08 - Asteroid 5035 Swift Closest Approach To Earth (1.960 AU)
• Jun 08 - Asteroid 249521 Truth Closest Appproach To Earth (2.216 AU)
• Jun 08 - Asteroid 1537 Transylvania Closest Approach To Earth (2.416 AU)
• Jun 08 - Lecture: Gravitational Lensing - Bends in Spacetime, Mt. Tamalpais State Park, California
• Jun 08 - Griffith Observatory Public Star Party, Los Angeles
• Jun 09 - Comet 363P/Lemmon At Opposition (2.752 AU)
• Jun 09 - Comet 186P/Garradd Closest Approach To Earth (3.516 AU)
• Jun 09 - Comet 186P/Garradd At Opposition (3.516 AU)
• Jun 09 - Apollo Asteroid 2017 XY2 Near-Earth Flyby (0.074 AU)
• Jun 09 - Asteroid 5392 Parker Closest Approach To Earth (1.523 AU)
• Jun 09 - Asteroid 4628 Laplace Closest Approach To Earth (1.635 AU)
• Jun 09 - Kuiper Belt Object 2010 KZ39 At Opposition (44.988 AU)
• Jun 09-12 - Workshop: Artificial Intelligence Methods in Cosmology, Ascona, Switzerland
• Jun 09-13 - 234th Meeting of the American Astronomical Society (AAS), St. Louis, Missouri
• Jun 09-14 - Workshop: Light in the Suburbs - Structure and Chemodynamics of Galaxy Halos, Sexten, Italy
• Jun 09-14 - Conference: Adaptive Optics for Extremly Large Telescope (AO4ELT6), Quebec, Canada
• Jun 09-15 - 2019 International Conference on Applications of Nuclear Techniques, Crete, Greece
• Jun 09-16 - Bard Summer School on Quantum Gravity, Annandale-on-Hudson, New York
• Jun 09-21 - Workshop: Gauge Theories, Supergravity and Superstrings, Benasque, Spain
• Jun 10 - Jupiter At Opposition
• Jun 10 - Amor Asteroid 452307 Manawydan Closest Approach To Earth (1.399 AU)
• Jun 10 - Asteroid 10916 Okina-Ouna Closest Approach To Earth (1.801 AU)
• Jun 10 - 10th Anniversary (2009), Selene (Kaguya) Spacecraft Impacted the Moon (Japan)
• Jun 10 - Richard Hill's 70th Birthday (1949)
• Jun 10 - Jim McDivitt's 90th Birthday (1929)
• Jun 10 - George Dollond's 245th Birthday (1774)
• Jun 10-13 - International Conference: Impacts and Their Role in the Evolution of Life, Tallberg, Sweden
• Jun 10-13 - Conference: The Nature of Dark Matter and Large Scale Structure, Nicosia, Cyprus
• Jun 10-13 - 50th Annual Meeting of the Division on Dynamical Astronomy (DDA) of the AAS, Boulder, Colorado
• Jun 10-14 - International Society for Photogrammetry and Remote Sensing (ISPRS) Geospatial Week 2019, Enchede, The Netherlands
• Jun 10-14 - Conference: Zooming in on Star Formation, Nafplio, Greece
• Jun 10-14 - Invisibles Workshop 2019: Neutrinos, Dark Matter and Dark Energy, Valencia, Spain
• Jun 10-14 - International Conference on Precision Physics and Fundamental Physical Constants, Tihany, Hungary
• Jun 10-14 - VarSITI Closing Symposium, Sofia, Bulgaria
• Jun 10-15 - 18th International Conference on Strangeness in Quark Matter (SQM 2019), Bari, Italy
• Jun 10-16 - Solar Physics Summer School, Leh, Ladakh, India
• Jun 10-21 - 10th International Pulsar Timing Array (IPTA) Workshop, Pune, India
• Jun 10-21 - Summer School on Particle Physics, Trieste, Italy
• Jun 11 - Comet C/2018 KJ3 (Lemmon) Closest Approach To Earth (2.742 AU)
• Jun 11 - Asteroid 9387 Tweeddledee Closest Approach To Earth (1.166 AU)
• Jun 11 - Asteroid 9252 Goddard Closest Approach To Earth (2.046 AU)
• Jun 11 - Asteroid 6136 Gryphon Closest Approach To Earth (2.195 AU)
• Jun 11 - 15th Anniversary (2004), Cassini, Phoebe Flyby
• Jun 11 - 70th Anniversary (1949), Kunashak Meteorite Fall (Hit House in Russia)
• Jun 11 - William Brook's 175th Birthday (1844)
• Jun 11-12 - Conference: Military Space USA, Los Angeles, California
• Jun 11-13 -[Apr 03] AGU-SEG Airborne Geophysics Workshop, Davie, Florida
• Jun 11-14 - TRAPPIST-1 Conference: Towards the Comparative Study of Temperate Terrestrial Worlds, Liege, Belgium
• Jun 11-14 - 9th International Conference on Recent Advances in Space Technology (RAST 2019), Istanbul, Turkey
• Jun 11-14 - Workshop: Singularities and Horizons - From Blackholes to Cosmology, Leiden, The Netherlands
• Jun 11-14 - 9th Coronal Loops Workshop, St. Andrews, United Kingdom
• Jun 11-14 - 2019 CAN in Space Workshop, Gothenburg, Sweden
• Jun 11-14 - 10th Joint Meeting of The Space Resources Roundtable (SRR), Golden, Colorado, Golden, Colorado
• Jun 12 - Comet 11P/Tempel-Swift-LINEAR At Opposition (3.156 AU)
• Jun 12 - Dwarf Planet Ceres Occults UCAC5 360-074468 (12.1 Magnitude Star)
• Jun 12 - Asteroid 2 Pallas Occults UCAC5 567-046961 (7.9 Magnitude Star)
• Jun 12 - Apollo Asteroid 2011 TC4 Near-Earth Flyby (0.085 AU)
• Jun 12 - Asteroid 6296 Cleveland Closest Approach To Earth (0.979 AU)
• Jun 12 - Asteroid 249519 Whitneyclavin Closest Approach To Earth (1.441 AU)
• Jun 12 - Asteroid 33002 Everest Closest Approach To Earth (2.291 AU)
• Jun 12 - Lecture: Apollo Missions - Landing on The Moon, London, United Kingdom
• Jun 12 - 15th Anniversary (2004), Ellerslie Meteorite Fall (Hit House in New Zealand)
• Jun 12 - 30th Anniversary (1989), Opotiki Meteorite Fall (Hit Building in New Zealand)
• Jun 12-14 - XMM-Newton 2019 Science Workshop: Astrophysics of Hot Plasma in Extended X-ray Sources, Madrid, Spain
• Jun 12-14 - 2019 Annual Meeting of Planetary Geologic Mappers, Flagstaff, Arizona
• Jun 12-14 - 8th International Symposium on Non-CO2 Greenhouse Gases: Global Challenges and Local Solutions, Amsterdam, The Netherlands
• Jun 12-14 - Exoclimes Simulation Platform (ESP) Inaugural Summer School (2019), Guarda Val, Switzerland
• Jun 12-21 - 62nd Session of the Committee on the Peaceful Uses of Outer Space, Vienna, Austria
• Jun 13 - Comet 209P/LINEAR Perihelion (0.968 AU)
• Jun 13 - Comet P/2006 S1 (Christensen) At Opposition (1.021 AU)
• Jun 13 - Comet 235P/LINEAR Closest Approach To Earth (2.643 AU)
• Jun 13 - Comet 201P/LONEOS At Opposition (3.964 AU)
• Jun 13 - Asteroid 3043 San Diego Closest Approach To Earth (1.150 AU)
• Jun 13 - Ann Druyan's 65th Birthday (1949)
• Jun 13 - Kuiper Belt Object 174567 Varda At Opposition (45.633 AU)
• Jun 13-14 - National Radio Astronomy Observatory (NRAO) Community Day at UMBC, Baltimore, Maryland
• Jun 13-16 - Royal Astronomical Society of Canada (RASC) 2019 General Assembly, Toronto, Canada
• Jun 14 - Comet 68P/Klemola At Opposition (1.330 AU)
• Jun 14 - Comet 231P/LINEAR-NEAT Perihelion (3.022 AU)
• Jun 14 - Dwarf Planet Ceres Occults TYC 6205-00960-1 (11.0 Magnitude Star)
• Jun 14 - Apollo Asteroid 1866 Sisyphus Closest Approach To Earth (0.450 AU)
• Jun 14 - Neptune Trojan 2013 KY18 At Opposition (28.905 AU)
• Jun 14 - 25th Anniversary (1994), St. Robert Meteorite Fall (Hit House in Canada)
• Jun 14 - 70th Anniversary (1949), V-2 Launch Carrying Albert II, the Rhesus Monkey
• Jun 14 - Asteroid 7853 Confucius Closest Approach To Earth (1.992 AU)
• Jun 14 - Nilakantha Somayaji's 575th Birthday (1444)
• Jun 14-17 - SNEWS 2.0 Workshop: Supernova Neutrinos in the Multi-Messenger Era, Sudbury, Canada
• Jun 14-22 - Cracow School of Theoretical Physics: Probing the Violent Universe with Multimessenger Eyes - Gravitational Waves, High-Energy Neutrinos, Gamma Rays, and Cosmic Rays, Zakopane, Poland
• Jun 15 - Moon Occults Dwarf Planet Ceres
• Jun 16 - Comet P/2000 R2 (LINEAR) Perihelion (1.624 AU)
• Jun 16 - Comet 85P/Boethin At Opposition (3.307 AU)
• Jun 16 - Apollo Asteroid 2017 XZ1 Near-Earth Flyby (0.076 AU)
• Jun 16 - Asteroid 3837 Carr Closest Approach To Earth (1.244 AU)
• Jun 16 - Asteroid 1816 Liberia Closest Approach To Earth (1.735 AU)
• Jun 16 - Asteroid 4252 Godwin Closest Approach To Earth (1.393 AU)
• Jun 16 - Asteroid 25275 Jocelynbell Closest Approach To Earth (1.583 AU)
• Jun 16-20 - 24th ESA Symposium on European Rocket and Balloon Programmes and Related Research, Essen, Germany
• Jun 16-21 - Gordon Research Conference: New Physics in the Era of Precision Cosmology, Barcelona, Spain
• Jun 16-23 - 10th European Summer School on Experimental Nuclear Astrophysics, Catania, Sicily, Italy
• Jun 17 - Asteroid 3155 Lee Closest Approach To Earth (1.542 AU)
• Jun 17 - Asteroid 1801 Titicaca Closest Approach To Earth (2.215 AU)
• Jun 17 - William Finlay's 170th Birthday (1849)
• Jun 17-19 - 11th IAA Symposium on the Future of Space Exploration Moon, Mars and Beyond - Becoming an Interplanetary Civilization, Torino, Italy
• Jun 17-19 - Emerging Researchers in Exoplanet Science (ERES) Symposium, Ithaca, New York
• Jun 17-19 - 5th Workshop of SCAR Astronomy and Astrophysics from Antarctica (AAA), Courmayeur, Italy
• Jun 17-19 - North American Einstein Toolkit Workshop, Rochester, New York
• Jun 17-19 - Workshop: The Cosmic Web - From Galaxies to Cosmology, Edinburgh, United Kingdom
• Jun 17-20 - Conference: From Stars to Planets II - Connecting our Understanding of Star and Planet Formation, Gothenburg, Sweden
• Jun 17-21 - Workshop: The Very Large Telescope in 2030, Garching, Germany
• Jun 17-21 - Meteoroids 2019 Conference, Bratislava, Slovakia
• Jun 17-21 - Conference: Geometric Foundations of Gravity 2019 , Tartu, Estonia
• Jun 17-21 - 2019 AIAA Aviation and Aeronautics Forum and Exposition, Dallas, Texas
• Jun 17-21 - Conference: Exploring the Energetic Universe 2019, Astana, Kazakhstan
• Jun 17-21 - Loops '19 Conference, University Park, Pennsylvania
• Jun 17-21 - 74th International Symposium on Molecular Spectroscopy, Urbana, Illinois
• Jun 17-21 - 2019 Canadian Astronomical Society (CASCA) Annual Meeting, Montreal, Canada
• Jun 17-21 - 22nd Capra Meeting on Radiation Reaction in General Relativity, Rio de Janeiro, Brazil
• Jun 17-21 - Forth Barcelona Techno Week: Course on Nanosatellites, Barcelona, Spain
• Jun 17-23 - International Paris Air Show, Paris Le Bourget, France
• Jun 17-23 - 13th International Workshop: Lie Theory and Its Applications in Physics, Varna, Bulgaria
• Jun 17-28 - It from Qubit School/Workshop, Kyoto, Japan
• Jun 17-28 - Program: String Geometry and String Phenomenology Institute, Geneva, Switzerland
• Jun 17-Jul 12 - Program: Indirect Searches for New Physics Across the Scales, Mainz, Germany
• Jun 18 - Asteroid 305254 Moron Closest Approach To Earth (2.000 AU)
• Jun 18 - Asteroid 1001 Gaussia Closest Approach To Earth (2.478 AU)
• Jun 18 - 10th Anniversary (2009), Lunar Reconnaissance Orbiter (LRO)/Lunar CRater Observation and Sensing Satellite (LCROSS) Launch
• Jun 18 - 130th Anniversay (1889), Mighei Meteorite Fall in USSR
• Jun 18 - William Lassell's 220th Birthday (1799)
• Jun 18-19 - International Meeting on Paleoclimate: Changes and Adaptation, Coimbra, Portugal
• Jun 18-20 - 4th Planetary Data Workshop, Flagstaff, Arizona
• Jun 18-20 - Conference: Science in Our Own Backyard - Exploring the Galaxy and the Local Group with WFIRST, Pasadena, California
• Jun 18-21 - Conference: Gaia's View of Pre-Main Sequence Evolution - Linking the T Tauri and Herbig Ae/Be Stars, Leeds, United Kingdom
• Jun 18-21 - 10th Young Researcher Meeting, Rome, Italy
• Jun 19 - Moon Occults Saturn
• Jun 19 - Moon Occults Dwarf Planet Pluto
• Jun 19 - Mercury Passes 0.2 Degrees from Mars
• Jun 19 - Comet P/1999 RO28 (LONEOS) Closest Approach To Earth (1.513 AU)
• Jun 19 - Comet 261P/Larson Perihelion (2.013 AU)
• Jun 19 - Aten Asteroid 2014 MV18 Near-Earth Flyby (0.078 AU)
• Jun 19 - Aten Asteroid 2014 OL339 Closest Approach To Earth (0.293 AU)
• Jun 19 - Amor Asteroid 5869 Tanith Closest Approach To Earth (1.409 AU)
• Jun 19 - Plutino 28978 Ixion At Opposition (38.212 AU)
• Jun 19 - 15th Anniversary (2004), Discovery of Asteroid 99942 Apophis
• Jun 19-22 - Conference: Supermassive Black Holes - Enviroment and Evolution, Corfu, Greece
• Jun 19-23 - 14th Biennial History of Astronomy Workshop, Notre Dame, Indiana
• Jun 20 - Comet 304P/Ory Closest Approach To Earth (2.722 AU)
• Jun 20 - Comet 62P/Tsuchinshan At Opposition (3.441 AU)
• Jun 20 - Binary Apollo Asteroid 69230 Hermes Closest Approach To Earth (1.308 AU)
• Jun 20 - Asteroid 397278 Arvidson Closest Approach To Earth (1.774 AU)
• Jun 20 - Lecture: From Crazy Ideas to A Mission, Pasadena, California
• Jun 20 - Ilan Ramon's 65th Birthday (1954)
• Jun 20 - John Paraskevopoulos' 130th Birthday (1889)
• Jun 20-22 - Workshop: Building the NASA Citizen Science Community, Tucson, Arizona
• Jun 21 - Summer Solstice, 15:54 UT
• Jun 21 - Spektr-RG (SXG) Proton-M/DM-03 Launch
• Jun 21 - Comet C/2018 V1 (Machholz-Fujikawa-Iwamoto) At Opposition (2.548 AU)
• Jun 21 - Comet 120P/Mueller At Opposition (3.383 AU)
• Jun 21 - Comet 118P/Shoemaker-Levy At Opposition (3.942 AU)
• Jun 21 - Comet P/2017 B4 (PANSTARRS) At Opposition (4.037 AU)
• Jun 21 - Aten Asteroid 2010 RX30 Near-Earth Flyby (0.094 AU)
• Jun 21 - Apollo Asteroid 11500 Tomaiyowit Closest Approach To Earth (0.187 AU)
• Jun 21 - Asteroid 274300 UNESCO Closest Approach To Earth (1.110 AU)
• Jun 21 - Amor Asteroid 3553 Mera Closest Approach To Earth (1.227 AU)
• Jun 21 - Asteroid 5053 Chladni Closest Approach To Earth (1.495 AU)
• Jun 21 - Asteroid 26858 Misterrogers Closest Approach To Earth (2.223 AU)
• Jun 21 - Lecture: From Crazy Ideas to A Mission, Pasadena, California
• Jun 21 - 15th Anniversary (2004), SpaceShipOne Launch (1st Private Manned Space Launch)
• Jun 21 - Oleg Kononenko's 55th Birthtday (1964)
• Jun 21-23 - Ensisheim Meteorite Show 2019, Ensisheim, Alsace, France
• Jun 22 - Ziyuan 2D (ZY 2D)/BNU 1/Tianyi MV-1 CZ-4B Launch
• Jun 22 - Comet 255P/Levy At Opposition (3.920 AU)
• Jun 22 - Apollo Asteroid 2016 WQ3 Near-Earth Flyby (0.079 AU)
• Jun 22 - Atira Asteroid 418265 (2008 EA32) Closest Approach To Earth (0.589 AU)
• Jun 22 - Apollo Asteroid 11066 Sigurd Closest Approach To Earth (1.161 AU)
• Jun 22 - Asteroid 2906 Caltech Closest Approach To Earth (2.253 AU)
• Jun 22-23 - Gordon Research Seminar: Origins of Solar Systems - The Composition and Assembly of Planets, South Hadley, Massachusetts
• Jun 23 - Mercury At Its Greatest Eastern Elongation (25 Degrees)
• Jun 23 - Comet P/2006 H1 (McNaught) Closest Approach To Earth (1.842 AU)
• Jun 23 - Comet 235P/LINEAR At Opposition (2.657 AU)
• Jun 23 - Asteroid 44597 Thoreau Closest Approach To Earth (1.085 AU)
• Jun 23 - Apollo Asteroid 2063 Bacchus Closest Approach To Earth (1.574 AU)
• Jun 23 - Asteroid 65675 Mohr-Gruber Closest Approach To Earth (2.179 AU)
• Jun 23 - Centaur Object 5145 Pholus At Opposition (27.282 AU)
• Jun 23 - 10th Anniversary (2009), Lunar Reconnaissance Orbiter (LRO), Lunar Orbit Insertion
• Jun 23-27 - Conference: Atomic Structure and Oscillator Strengths for Astrophysical and Fusion Plasma Research (ASOS-13), Fudan, China
• Jun 23-27 - 11th North American Paleontological Convention, Riverside, California
• Jun 23-28 - IAU Symposium 353: Galactic Dynamics in the Era of Large Surveys, Shanghai, China
• Jun 23-28 - Gordon Research Seminar: Origins of Solar Systems - Meteoritical, Spacecraft and Astrophysical Perspectives on the Assembly and Composition of Planets, South Hadley, Massachusetts
• Jun 23-28 - 9th Meeting on Hot Subdwarfs and Related Objects, Hendaye, France
• Jun 23-29 - 10th Alexander Friedmann International Seminar on Gravitation and Cosmology and Fourth Symposium on the Casimir Effect, St. Petersburg, Russia
• Jun 24 - Aten Asteroid 441987 (2010 NY65) Near-Earth Flyby (0.020 AU)
• Jun 24 - Amor Asteroid 2011 HT Near-Earth Flyby (0.074 AU)
• Jun 24 - Asteroid 7470 Jabberwock Closest Approach To Earth (1.187 AU)
• Jun 24 - Asteroid 3714 Kenrussell Closest Approach To Earth (1.913 AU)
• Jun 24 - Asteroid 12432 Usuda Closest Approach To Earth (2.128 AU)
• Jun 24 - Kuiper Belt Object 50000 Quaoar At Opposition (41.849 AU)
• Jun 24 - 20th Anniversary (1999), Cassini, 2nd Venus Flyby
• Jun 24 - 45th Anniversary (1974), Salyut 3 Launch (USSR Space Station)
• Jun 24 - Carolyn Shoemaker's 90th Birthday (1929)
• Jun 24-25 - 3rd Atmospheric Composition and the Asian Monsoon (ACAM) Training School, Selangor Malaysia
• Jun 24-27 - Conference: IGC@25 - Multimessenger Universe, State College, Pennsylvania
• Jun 24-27 - AstroInformatics 2019 Conference, Pasadena, California
• Jun 24-27 - Ocean Carbon & Biogeochemistry (OCB) Summer Workshop, Woods Hole, Massachussetts
• Jun 24-28 - 2019 Astrobiology Science Conference (AbSciCon), Seattle, Washington
• Jun 24-28 - Conference: Merging Visions - Exploring Compact-Object Binaries with Gravity and Light, Santa Barbara, California
• Jun 24-28 - Workshop: Euclid Survey(s) - Scientific Optimisation, Sexten, Italy
• Jun 24-28 - Workshop: Multimessenger Data Analysis in the Era of CTA, Sexten, Italy
• Jun 24-28 - Conference: The Golden Age of Cosmology from Planck to Euclid (CosmoGold IAP 2019), Paris, France
• Jun 24-28 - Astrochemistry: From Nanometers to Megaparsecs - A Symposium in Honour of John H. Black, Gothenburg, Sweden
• Jun 24-28 - Ringberg Conference on Star-Planet Connection (STARPLANET 2019), Ringberg Castle, Germany
• Jun 24-28 - United Nations/Fiji Workshop on the Applications of Global Navigation Satellite Systems, Suva, Fiji
• Jun 24-28 - 4th Sloan Digital Sky Survey (SSDS-IV) Collaboration Meeting, Ensenada, Mexico
• Jun 24-28 - Workshop: Stellar Hydro Days V, Exeter, United Kingdom
• Jun 24-28 - Conference: String Phenomenology 2019 (SP19), Geneva, Switzerland
• Jun 24-29 - Conference: IGC@25 - Multimessenger Universe, University Park, Pennsylvania
• Jun 24-29 - European Week of Astronomy and Space Science, Lyon, France
• Jun 24-Jul 05 - Event: New Pathways in Explorations of Quantum Field Theory and Quantum Gravity Beyond Supersymmetry, Trieste, Italy
• Jun 25 - Comet C/2018 W1 (Catalina) Closest Approach To Earth (1.673 AU)
• Jun 25 - Asteroid 3473 Sapporo Closest Approach To Earth (1.292 AU)
• Jun 25 - Hermann Oberth's 125th Birthday (1894)
• Jun 25-27 - Workshop: Radio/Millimeter Astrophysical Frontiers in the Next Decade, Charlottesville, Virginia
• Jun 25-29 - Conference: Feedback and its Role in Galaxy Formation, Spetses, Greece
• Jun 26 - Comet 322P/SOHO Closest Approach To Earth (0.913 AU)
• Jun 26 - Comet 311P/PANSTARRS At Opposition (1.383 AU)
• Jun 26 - Atira Asteroid 2010 XB11 Closest Approach To Earth (0.716 AU)
• Jun 26 - Asteroid 9548 Fortran Closest Approach To Earth (1.949 AU)
• Jun 26 - Comet 30P/Reinmuth At Opposition (3.612 AU)
• Jun 26 - Apollo Asteroid 4769 Castalia Closest Approach To Earth (1.511 AU)
• Jun 26 - Lyman Spitzer's 105th Birthday (1914)
• Jun 26 - William Thomson's 195th Birthday (1824)
• Jun 26-28 - 4th Atmospheric Composition and the Asian Monsoon (ACAM) Workshop, Selangor Malaysia
• Jun 26-30 - Rocky Mountain Star Stare, near Gardner, Colorado
• Jun 27 - Meteor-M N2-2/ Ionosfera 3 & 4 Soyuz-2.1b/Fregat-M Launch
• Jun 27 - Comet 254P/McNaught At Opposition (2.991 AU)
• Jun 27 - Aten Asteroid 2008 KV2 Near-Earth Flyby (0.045 AU)
• Jun 27 - Asteroid 132524 APL Closest Approach To Earth (1.012 AU)
• Jun 27 - Asteroid 3530 Hammel Closest Approach To Earth (1.117 AU)
• Jun 27 - Asteroid 19695 Billnye Closest Approach To Earth (1.139 AU)
• Jun 27 - Asteroid 7850 Buenos Aires Closest Approach To Earth (1.227 AU)
• Jun 27-28 - The Planetary CubeSats Symposium, Greenbelt, Maryland
• Jun 27-28 -[Apr 08] S-SAIL Workshop: Solar System Atmospheres' Investigation and exopLanets, Lisbon, Portugal
• Jun 27-28 - MilSatCom USA Conference, Arlington, Virginia
• Jun 28 - Amor Asteroid 2016 NN15 Near-Earth Flyby (0.025 AU)
• Jun 28 - Aten Asteroid 494999 (2010 JU39) Near-Earth Flyby (0.060 AU)
• Jun 28 - Apollo Asteroid 2013 WR45 Near-Earth Flyby (0.092 AU)
• Jun 28 - Asteroid 716 Berkeley Closest Approach To Earth (1.724 AU)
• Jun 28 - Asteroid 1071 Brita Closest Approach To Earth (2.084 AU)
• Jun 29 - Comet 311P/PANSTARRS Closest Approach To Earth (1.382 AU)
• Jun 29 - Comet 348P/PANSTARRS At Opposition (3.121 AU)
• Jun 29 - Asteroid 5841 Stone Closest Approach To Earth (1.102 AU)
• Jun 29 - Apollo Asteroid 3361 Orpheus Closest Approach To Earth (1.343 AU)
• Jun 29 - Asteroid 4636 Chile Closest Approach To Earth (1.720 AU)
• Jun 29 - Asteroid 163800 Richardnorton Closest Approach To Earth (1.809 AU)
• Jun 29 - Asteroid 5870 Baltimore Closest Approach To Earth (2.903 AU)
• Jun 29 - Carlyle Beals' 120th Birthday (1899)
• Jun 30 - Asteroid Day
• Jun 30 - Asteroid 2912 Lapalma Closest Approach To Earth (1.276 AU)
• Jun 30 - 15th Anniversary (2004), Cassini, Saturn Orbit Insertion
• Jun 30 - 35th Anniversary (1984), Aomori Meteorite Fall (Hit Building in Japan)
• Jun 30-Jul 04 - Royal Astronomical Society's (RAS) 2019 National Astronomy Meeting, Lancaster, United Kingdom
• Jun 30-Jul 05 - Gordon Research Conference: New Tools for the Next Generation of Particle Physics and Cosmology, Hong Kong, China
• Jun 30-Jul 05 - Alpine Cosmology Workshop 2019 (ACW19), Laberarde, France
• Jun 30-Jul 06 - IAU Symposium 354: Solar and Stellar Magnetic Fields - Origins and Manifestations, Copiapo, Chile

July 2019

• Jul ?? -[Apr 08] Chandrayaan 2 GSLV Mk II Launch (India Moon Orbiter, Lander, Rover)
• Jul ?? - STP-3 Atlas 5 Launch
• Jul ?? - AEHF-5 Atlas 5 Launch
• Jul ?? - Shijian 20 (SJ-20) CZ-5 Launch
• Jul ?? -[Apr 07] RISAT-2BR1 PSLV Launch
• Jul ?? -[Apr 08] Falcon Eye 1 Vega Launch
• Jul ?? - 755th Anniversary (1264), 1st Observation of the Great Comet of 1264
• Jul 01 - Comet P/1999 RO28 (LONEOS) Perihelion (1.123 AU)
• Jul 01 - Comet 84P/Giclas At Opposition (2.181 AU)
• Jul 01 - Apollo Asteroid 2015 XC352 Near-Earth Flyby (0.031 AU)
• Jul 01 - Asteroid 2200 Pasadena Closest Approach To Earth (1.326 AU)
• Jul 01 - Asteroid 6701 Warhol Closest Approach To Earth (1.462 AU)
• Jul 01 - Asteroid 2068 Dangreen Closest Approach To Earth (1.951 AU)
• Jul 01 - 20th Anniversary (1999), Giotto, Earth Flyby
• Jul 01-03 - Outflows 2019 Workshop: From Winds to Jets - The Role of Outflows in Compact Binaries, Amsterdam, The Netherlands
• Jul 01-04 - 8th European Conference for Aeronautics and Space Sciences (EUCASS 2019), Madrid, Spain
• Jul 01-04 - Outflows 2019 Workshop: From Winds to Jets - The Role of Outflows in Compacts Binaries, Amsterdam, The Netherlands
• Jul 01-04 - 19th International Conference on Computational Science and its Applications, St. Petersburg, Russia
• Jul 01-05 - Workshop: Behind the Curtain of Dust - Activity and Evolution in Obscured Galaxies, Sexten, Italy
• Jul 01-05 - Workshop: From the Dolomites to the Event Horizon - Sledging Down the Black Hole Potential Well, Sexten, Italy
• Jul 01-05 - ECT Workshop: Nuclear and Astrophysics Aspects for the Rapid Neutron Capture Process in the Era of Multimessenger Observations, Trento, Italy
• Jul 01-05 - Conference: Beyond General Relativity, Beyond Cosmological Standard Model, Warsaw, Poland
• Jul 01-05 - 14th International Conference on Numerical Modeling of Space Plasma Flows (ASTRONUM-2019), Paris, France
• Jul 01-05 - 25th International Symposium on Particles, Strings and Cosmology (PASCOS 2019), Manchester, United Kingdom
• Jul 01-05 - String Math 2019 Conference, Uppsala, Sweden
• Jul 01-05 - 21st International Meeting: Physical Interpretations of Relativity Theory - 2019, Moscow, Russia
• Jul 01-05 - Meeting: The Beginnings and Ends of Double White Dwarfs, Copenhagen, Denmark
• Jul 01-05 - 11th International Symposium on Quantum Theory and Symmetries (QTS2019), Montreal, Canada
• Jul 01-05 - 1st IEEE GRSS Instrumentation and Future Technologies Remote Sensing Summer School, Cerdanyola del Valles, Spains
• Jul 01-05 - Restore - Researching Social Theories, Resources, and Environment International Summer School, Dublin, Ireland
• Jul 01-06 - Joint ICISE-CBPF Workshop: New Physics with Exotic and Long-Lived Particles, Quy Nhon, Vietnam
• Jul 01-06 - International Plasma Physics School, Quy Nhon, Vietnam
• Jul 01-08 - London Climate Action Week, London, United Kingdom
• Jul 01-12 - Torun Astrophysics, Spectroscopy and Quantum Chemistry Summer School (TASQ), Torun, Poland
• Jul 01-12 - 2nd ICTP Summer School on Theory, Mechanisms and Hierarchical Modelling of Climate Dynamics: Convection Organization and Climate Sensitivity, Trieste, Italy
• Jul 01-20 - 8th International Conference on New Frontiers in Physics, Kolymbari, Greece
• Jul 01-26 - Workshop: Dynamics of Large-Scale Structure Formation, Munich, Germany
• Jul 02 - Total Solar Eclipse (Visible from Central Chile, Central Argentina)
• Jul 02 - Apollo Asteroid 10563 Izhdubar Closest Approach To Earth (0.785 AU)
• Jul 02 - Asteroid 193 Ambrosia Closest Approach To Earth (2.273 AU)
• Jul 02 - 5th Anniversary (2014), Orbiting Carbon Observatory-2 (OCO-2) Launch
• Jul 02 - Pedro Paulet's 145th Birthday (1874)
• Jul 02-05 - 5th International Symposium on Origin of Matter and Evolution of Galaxies (OMEG 15), Kyoto, Japan
• Jul 02-05 - Pre-Strings 2019 Workshop, Leuven, Belgium
• Jul 02-07 - Workshop: Towards Future Research on Space Weather Drivers, San Juan, Argentina
• Jul 03 - Comet 350P/McNaught Closest Approach To Earth (2.968 AU)
• Jul 03 - Comet C/2017 K5 (PANSTARRS) At Opposition (6.945 AU)
• Jul 03 - Asteroid 73491 Robmatson Closest Approach To Earth (1.922 AU)
• Jul 03 - Asteroid 39415 Janeausten Closest Approach To Earth (2.122 AU)
• Jul 03 - Asteroid 1776 Kuiper Closest Approach To Earth (2.150 AU)
• Jul 03 - Asteroid 2807 Karl Marx Closest Approach To Earth (2.260 AU)
• Jul 04 - Earth At Aphelion (1.017 AU From Sun)
• Jul 04 - Moon Occults Mars
• Jul 04 - Comet 160P/LINEAR At Opposition (1.268 AU)
• Jul 04 - Asteroid 2281 Biela Closest Approach To Earth (0.908 AU)
• Jul 04 - Asteroid 4690 Strasbourg Closest Approach To Earth (1.036 AU)
• Jul 04 - Asteroid 8120 Kobe Closest Approach To Earth (1.196 AU)
• Jul 04 - Asteroid 8749 Beatles Closest Approach To Earth (1.649 AU)
• Jul 04 - Asteroid 3061 Cook Closest Approach To Earth (1.745 AU)
• Jul 04 - Asteroid 13897 Vesuvius Closest Approach To Earth (2.508 AU)
• Jul 04 - Centaur Object 330836 Orius At Opposition (16.997 AU)
• Jul 04 - Neptune Trojan 2008 LC18 At Opposition (31.407 AU)
• Jul 04 - 965th Anniversary (1054), The Crab Nebula Supernova
• Jul 05 -[Apr 03] DirecTV 16/ Eutelsat 7C Ariane 5 Launch
• Jul 05 - Comet P/2012 K3 (Gibbs) At Opposition (1.108 AU)
• Jul 05 - Comet 350P/McNaught At Opposition (2.969 AU)
• Jul 05 - Asteroid 11945 Amsterdam Closest Approach To Earth (1.774 AU)
• Jul 05 - Apollo Asteroid 471926 Jormungandr Closest Approach To Earth (1.776 AU)
• Jul 05 - Centaur Object 10370 Hylonome At Opposition (23.332 AU)
• Jul 05 - Kuiper Belt Object 307261 (2002 MS4) At Opposition (45.615 AU)
• Jul 05-07 - 2019 Alberta Star-B-Q, Caroline, Canada
• Jul 06 - Soyuz MS-13 Soyuz-FG Launch (International Space Station 59S)
• Jul 06 - Comet 31P/Schwassmann-Wachmann Perihelion (3.425 AU)
• Jul 06 - Apollo Asteroid 10145 (1994 CK1) Near-Earth Flyby (0.099 AU)
• Jul 06 - Asteroid 9133 d'Arrest Closest Approach To Earth (1.504 AU)
• Jul 06 - Asteroid 84566 VIMS Closest Approach To Earth (2.174 AU)
• Jul 06 - 95th Anniversary (1924), Johnstown Meteorite Fall (Hit House in Colorado)
• Jul 06 - Robert White's 95th Birthday (1924)
• Jul 06-12 -[Apr 03] 2019 IFT-Perimeter-SAIFR Journeys into Theoretical Physics, Sao Paulo, Brazil
• Jul 07 - Mercury Passes 3.8 Degrees from Mars
• Jul 07 - Comet 254P/McNaught Closest Approach To Earth (2.977 AU)
• Jul 07 - Comet P/2013 O2 (PANSTARRS) At Opposition (3.519 AU)
• Jul 07 - Comet 24P/Schaumasse At Opposition (4.028 AU)
• Jul 07 - Comet C/2017 K5 (PANSTARRS) Closest Approach To Earth (6.943 AU)
• Jul 07 - Apollo Asteroid 2016 NO56 Near-Earth Flyby (0.009 AU)
• Jul 07 - Apollo Asteroid 2016 OF Near-Earth Flyby (0.033 AU)
• Jul 07 - Aten Asteroid 2013 ND15 (Venus Trojan) Closest Approach To Earth (0.482 AU)
• Jul 07 - Asteroid 4804 Pasteur Closest Approach To Earth (1.664 AU)
• Jul 07-09 - Conference: Astrophysical Dynamics, Shanghai, China
• Jul 07-11 - 14th Hellenic Astronomical Conference, Volos, Greece
• Jul 07-12 - 2nd Annual Meeting of the Meteoritical Society, Sappoo, Japan
• Jul 07-12 - 22nd International Conference on General Relativity and Gravitation (GR22) and 13th Annual Edoardo Amaldi Conference on Gravitational Wave (Amaldi13), Valencia, Spain
• Jul 07-12 - 2019 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, Atlanta, Georgia
• Jul 07-12 - Astronomical Society of Australia (ASA) Annual Scientific Meeting and General Meeting, St. Lucia, Australia
• Jul 07-19 - Vietnam School on Neutrinos (VSON3), Quy Nhon, Vietnam
• Jul 08 - Dragon CRS-18 (SpX 18)/ IDA 3/ RFTSat 1 Falcon 9 Launch (International Space Station)
• Jul 08 - Comet C/2018 X2 (Fitzsimmons) Perihelion (2.125 AU)
• Jul 08 - Apollo Asteroid 85585 Mjolnir Closest Approach To Earth (0.744 AU)
• Jul 08 - Aten Asteroid 398188 Agni Closest Approach To Earth (1.018 AU)
• Jul 08 - Asteroid 2843 Yeti Closest Approach To Earth (1.483 AU)
• Jul 08 - Asteroid 96193 Edmonton Closest Approach To Earth (1.706 AU)
• Jul 08 - Asteroid 21564 Widmanstatten Closest Approach To Earth (2.137 AU)
• Jul 08 - 25th Anniversary (1994), STS-65 Launch (Space Shuttle Endeavour - Shuttle Radar Laboratory)
• Jul 08-11 - Space Climate 7 Symposium, Canton Orford, Canada
• Jul 08-11 - WE-Heraeus-Seminar: Massive Neutrinos, Bad Honnef, Germany
• Jul 08-12 - International Planetary Probe Workshop 2019, Oxford, United Kingdom
• Jul 08-12 - Workshop: The Sun and the Inner Heliosphere (CESRA 2019), Potsdam, Germany
• Jul 08-12 - IAU Symposium 355: The Realm of the Low Surface Brightness Universe, Tenerife, Spain
• Jul 08-12 - Conference: Tracing Cosmic Evolution with Clusters of Galaxies, Sexten, Italy
• Jul 08-12 - Ringberg Workshop: Turbulence and Structure Formation in Protoplanetary Disks 2019: Observation, Theory, and Experiments, Ringberg Castle, Germany
• Jul 08-12 - International Glaciological Society (IGS) Symposium: Five Decades of Radioglaciology, Stanford, California
• Jul 08-18 - 27th International Union of Geodesy and Geophysics (IUGG) General Assembly, Montreal, Canada
• Jul 08-19 - Life and Earth Sciences and Sustainable Global and Regional Development (AKTRU2019) - International Symposium and Summer Schools, Altai Mountains, Russia
• Jul 08-19 - Boulder Space Weather Summer School, Boulder, Colorado
• Jul 09 - Saturn At Opposition
• Jul 09 - Apollo Asteroid 3200 Phaethon Closest Approach To Earth (0.810 AU)
• Jul 09 - Asteroid 15402 Suzaku Closest Approach To Earth (0.966 AU)
• Jul 09 - Asteroid 5899 Jedicke Closest Approach To Earth (1.014 AU)
• Jul 09 - Asteroid 7434 Osaka Closest Approach To Earth (1.400 AU)
• Jul 09 - Asteroid 13330 Dondavis Closest Approach To Earth (1.656 AU)
• Jul 09 -[Apr 10] Asteroid 12652 Groningen Closest Approach To Earth (1.748 AU)
• Jul 09 - Asteroid 16481 Thames Closest Approach To Earth (2.425 AU)
• Jul 09 - 40th Anniversary (1979), Voyager 2, Jupiter Flyby
• Jul 09-11 - IAA Regional Symposium of Space Debris Observations from Basilicata, Potenza, Italy
• Jul 09-11 -[Apr 09] Workshop: Stellar Magnetism - A Celebration of the Contributions of J.D. Landstreet, London, Canada
• Jul 09-12 - Conference: High Energy Phenomena in Relativistic Outflows VII (HEPRO VII), Barcelona, Spain
• Jul 09-13 - Strings 2019 Conference, Brussels, Belgium
• Jul 10 - Comet 209P/LINEAR Closet Approach To Earth (0.668 AU)
• Jul 10 - Comet P/2012 K3 (Gibbs) Closest Approach To Earth (1.105 AU)
• Jul 10 - Comet 313P/Gibbs At Opposition (1.783 AU)
• Jul 10 - Asteroid 21 Lutetia Occults 4665-01189-1 (10.8 Magnitude Star)
• Jul 10 - Asteroid 371 Bohemia Closest Approach To Earth (1.546 AU)
• Jul 10 - Asteroid 8146 Jimbell Closest Approach To Earth (2.409 AU)
• Jul 10 - Centaur Object 55576 Amycus At Opposition (20.375 AU)
• Jul 10 - Kuiper Belt Object 486958 (2014 MU69) At Opposition (42.199 AU)
• Jul 10 - Kuiper Belt Object 2014 PN70 At Opposition (42.883 AU)
• Jul 10-12 - John Glenn Memorial Symposium: Powering Innovation From the Sky to the Stars, Cleveland, Ohio
• Jul 10-17 - European Physical Society Conference on High Energy Physics (EPS-HEP), Ghent, Belgium
• Jul 11 - Asteroid 2187 La Silla Closest Approach To Earth (1.398 AU)
• Jul 11 - Asteroid 2097 Galle Closest Approach To Earth (1.667 AU)
• Jul 11 - Asteroid 42776 Casablanca Closest Approach To Earth (2.141 AU)
• Jul 11 - Lecture: Apollo 50th Anniversary, Pasadena, California
• Jul 11 - 40th Anniversary (1979), Skylab Re-Enters Into Earth's Atmosphere
• Jul 11-17 - NASA Planetary Volcanology Workshop in Hawaii: Analogs to Volcanic Features and Processes in Satellite and Rover Images, Hawaii
• Jul 12 - Comet 143P/Kowal-Mrkos Closest Approach To Earth (2.700 AU)
• Jul 12 - Amor Asteroid 2016 NJ33 Near-Earth Flyby (0.038 AU)
• Jul 12 - Asteroid 3850 Peltier Closest Approach To Earth (0.944 AU)
• Jul 12 - Apollo Asteroid 4034 Vishnu Closest Approach To Earth (1.180 AU)
• Jul 12 - Asteroid 101383 Karloff Closest Approach To Earth (1.208 AU)
• Jul 12 - Lecture: Apollo 50th Anniversary, Pasadena, California
• Jul 12-19 -[Apr 03] 19th International Baikal Summer School on Physics of Elementary Particles and Astrophysics, Bolshie Koty, Lake Baikal, Russia
• Jul 13 - Comet 68P/Klemola Closest Approach To Earth (1.246 AU)
• Jul 13 - Comet P/2006 W1 (Gibbs) At Opposition (2.153 AU)
• Jul 13 - Comet 210P/Christensen At Opposition (2.372 AU)
• Jul 13 - Comet C/2018 F1 (Grauer) Closest Approach To Earth (2.946 AU)
• Jul 13 - Comet P/2012 TK8 (Tenagra) At Opposition (3.552 AU)
• Jul 13 - Comet 227P/Catalina-LINEAR At Opposition (3.750 AU)
• Jul 13 - Asteroid 114703 North Dakota Closest Approach To Earth (1.708 AU)
• Jul 13 - Lecture: Cassini's Spectacular Final Year at Saturn, Mt. Tamalpais State Park, California
• Jul 13 - Griffith Observatory Public Star Party, Los Angeles
• Jul 13 - Aristarkh Belopolsky's 165th Birthday (1854)
• Jul 14 - Comet P/2002 S7 (SOHO) At Opposition (2.218 AU)
• Jul 14 - Comet 178P/Hug-Bell At Opposition (2.301 AU)
• Jul 14 - Comet C/2018 A6 (Gibbs) Perihelion (3.019 AU)
• Jul 14 - Aten Asteroid 2018 BF5 Near-Earth Flyby (0.098 AU)
• Jul 14-18 - Conference: The Pluto System After New Horizons, Laurel, Maryland
• Jul 14-19 - Conference: 'Barefoot EoR' - The First Billion Years of the Universe, Fitzroy Island, Australia
• Jul 14-19 - Workshop: Inhomogeneous Cosmologies IV, Torun, Poland
• Jul 14-19 - 34th International Conference on Phenomena in Ionized Gases (ICPIG 2019)/10th International Conference on Reactive Plasmas (ICRP-10), Sapporo, Japan
• Jul 14-26 - Workshop: Gravity - New Perspectives from Strings and Higher Dimensions, Benasque, Spain
• Jul 15 - Asteroid 12561 Howard Closest Approach To Earth (2.089 AU)
• Jul 15 - Centaur Object 10199 Chariklo At Opposition (15.188 AU)
• Jul 15 - Dwarf Planet 134340 Pluto At Opposition (32.823 AU)
• Jul 15 - 10th Anniversary (2009), STS-127 Launch (Space Shuttle Endeavour - JEM Exposed Facility)
• Jul 15 - William Birt's 215th Birthday (1804)
• Jul 15-17 - Lunar In Situ Resource Utilization (ISRU) Workshop, Columbia, Maryland
• Jul 15-17 - Conference: Tensions Between the Early and the Late Universe, Santa Barbara, California
• Jul 15-17 - Conference: Astronomy in Ukraine - From Archaeoastronomy to High-Energy Astrophysics, Kyiv, Ukraine
• Jul 15-18 - XCalibur 2019 Workshop, Winchester, United Kingdom
• Jul 15-19 - 15th International Conference on the Dark Side of the Universe, Buenos Aires, Argentina
• Jul 15-19 - Workshop: Life and Legacy Studying the Work of Stanley Kubrick, Leiden, The Netherlands
• Jul 15-19 - Workshop: Scintillating Science - Cutting-Edge Science Achieved Through the Observations of Radio Scintillation, Hermanus, South Africa
• Jul 15-19 - Conference: Integrability in Gauge and String Theories 2019, Stockholm, Sweden
• Jul 15-21 - ICTP-CLIVAR Summer School on Oceanic Eastern Boundary Upwelling Systems, Trieste, Italy
• Jul 15-26 - ICTP School on Geometry and Gravity, Trieste, Italy
• Jul 15-26 - Summer School: Advancing Theoretical Astrophysics, Amsterdam, The Netherlands
• Jul 15-26 - Summer School: Software Systems for Astronomy, Hilo, Hawaii
• Jul 15-26 - ESA/JRC International Summerschool on GNSS 2019, Vila Nova de Cerveira, Portugal
• Jul 15-26 - 11th Annual Summer Course in Flux Measurements and Advanced Modeling (Fluxcourse 2019), Nederland, Colorado
• Jul 15-26 - Summer IFT School (SIFTS), Madrid, Spain
• Jul 15-27 - BASIS Foundation Summer School 2019: Evolution of Galaxies and Stars, Sochi, Russia
• Jul 16 - 50th Anniversary (1969), Apollo 11 Launch (1st Manned Moon Landing)
• Jul 16 - Partial Lunar Eclipse
• Jul 16 - Moon Occults Saturn
• Jul 16 - Moon Occults Dwarf Planet Pluto
• Jul 16 - Comet P/2012 SB6 (Lemmon) At Opposition (2.201 AU)
• Jul 16 - Asteroid 1103 Sequoia Closest Approach To Earth (0.815 AU)
• Jul 16 - Samuel Molyneux's 330th Birthday (1689)
• Jul 16-17 - Earth Explorer-9 User Consultation Meeting, Cambridge, United Kingdom
• Jul 16-19 - 5th Conference on Perspectives in Nonlinear Dynamics (PNLD 2019), Sao Paulo, Brazil
• Jul 16-22 - 25th Anniversary (1994), Comet Shoemaker-Levy 9 Impacts on Jupiter
• Jul 17 - Dwarf Planet Pluto Occults UCAC5 340-173206 (12.9 Magnitude Star)
• Jul 17 - Asteroid 9965 GNU Closest Approach To Earth (1.160 AU)
• Jul 17 - Asteroid 12464 Manhattan Closest Approach To Earth (1.415 AU)
• Jul 17 - Asteroid 4749 Ledzepplin Closest Approach To Earth (1.955 AU)
• Jul 17 - Asteroid 9537 Nolan Closest Approach To Earth (1.988 AU)
• Jul 17 - Asteroid 3325 TARDIS Closest Approach To Earth (2.315 AU)
• Jul 17 - Georges Lemaitre's 125th Birthday (1894)
• Jul 17-19 - Workshop: Modeling Meerkats - Comparing Galaxy Formation Simulations to MeerKAT Surveys, Kruger Park, South Africa
• Jul 17-19 - Workshop on Computational Intelligence in Remote Sensing and Astrophysics, Heraklion, Crete
• Jul 18 - Comet 313P/Gibbs Closest Approach To Earth (1.775 AU)
• Jul 18 - Comet 187P/LINEAR Closest Approach To Earth (3.108 AU)
• Jul 18 - Apollo Asteroid 2014 MJ6 Near-Earth Flyby (0.091 AU)
• Jul 18 - Asteroid 10221 Kubrick Closest Approach To Earth (1.515 AU)
• Jul 18 - Asteroid 15000 CCD Closest Approach To Earth (1.644 AU)
• Jul 18 - Asteroid 234750 Amymainzer Closest Approach To Earth (1.692 AU)
• Jul 18 - Neptune Trojan 2011 HM102 At Opposition (27.273 AU)
• Jul 18-20 - Workshop: Anomalies 2019, Telangana, India
• Jul 18-21 - Bluedot Event, Cheshire, United Kingdom
• Jul 19 - Asteroid 13677 Alvin Closest Approach To Earth (2.081 AU)
• Jul 19 - Amor Asteroid 5653 Camarillo Closest Approach To Earth (2.249 AU)
• Jul 20 - 50th Anniversary (1969), 1st Man On The Moon (Apollo 11)
• Jul 20 - Comet 84P/Giclas Closest Approach To Earth (2.134 AU)
• Jul 20 - Amor Asteroid 481984 Cernunnos Closest Approach To Earth (0.947 AU)
• Jul 20 - Asteroid 8553 Bradsmith Closest Approach To Earth (0.959 AU)
• Jul 20 - Apollo Asteroid 4257 Ubasti Closest Approach To Earth (1.539 AU)
• Jul 20 - Asteroid 580 Selene Closest Approach To Earth (2.420 AU)
• Jul 20 - Amor Asteroid 887 Alinda Closest Approach To Earth (2.768 AU)
• Jul 20 - 20th Anniversary (1999), Retrieval Of Liberty Bell 7 Capsule From Ocean Floor
• Jul 21 - Comet P/2008 Y12 (SOHO) At Opposition (0.852 AU)
• Jul 21 - Comet P/2010 H2 (Vales) Closest Approach To Earth (2.987 AU)
• Jul 21 - Aten Asteroid 2016 KO Near-Earth Flyby (0.095 AU)
• Jul 21 - Asteroid 4255 Spacewatch Closest Approach To Earth (2.511 AU)
• Jul 21 - Plutino 2014 JR80 At Opposition (39.936 AU)
• Jul 21 - 105th Anniversary (1914), Seth Nicholson's Discovery of Jupiter Moon Sinope
• Jul 21-26 - Conference: Great Barriers in Planet Formation, Palm Cove, Australia
• Jul 21-Aug 09 - MITP Summer School: Non-Pertubative Phenomena and the Early Universe, Mainz, Germany
• Jul 22 - Comet 187P/LINEAR At Opposition (3.110 AU)
• Jul 22 - Apollo Asteroid 3752 Camillo Closest Approach To Earth (1.504 AU)
• Jul 22 - Asteroid 19911 Rigaux Closest Approach To Earth (2.272 AU)
• Jul 22 - Asteroid 5738 Billpickering Closest Approach To Earth (3.099 AU)
• Jul 22 - Friedrich Bessel's 235th Birthday (1784)
• Jul 22-25 - Workshop: Simulating Gravitation and Cosmology in Condensed Matter and Optical Systems, Trento, Italy
• Jul 22-26 - 9th International Conference on Mars, Pasadena, California
• Jul 22-26 - Kavli Institute for Cosmology (KICC) 10th Anniversary Symposium, Cambridge, United Kingdom
• Jul 22-26 - TASC5/KASC12 Workshop (TESS Asteroseismic Science Consortium), Cambridge, Massachussetts
• Jul 22-26 - Workshop: Artificial Intelligence in Astronomy, Garching, Germany
• Jul 22-26 - Conference: Holographic QCD, Stockholm, Sweden
• Jul 22-26 - 2019 Sagan Summer Workshop, Pasadena, California
• Jul 22-26 - Workshop: High Spatial Resolution Spectroscopy in the Era of ALMA, JWST and ELT, Sexten, Italy
• Jul 22-27 -[Apr 04] 8th Workshop on Flavor Symmetries and Consequences in Accelerators and Cosmology (FLASY 2019), Shanghai/HeiFei, China
• Jul 22-30 - Optical Design Summer School 2019, Chiang Mai, Thailand
• Jul 22-Aug 02 - Joint ICTP-Trieste and ICTP-SAIFR School on Observational Cosmology, Sao Paulo, Brazil
• Jul 22-Aug 02 - Sao Paulo School of Advanced Science on Atmospheric Aerosols: Properties, Measurements, Modeling, and Effects on Climate and Health, Sao Paulo, Brazil
• Jul 22-Aug 02 -[Apr 04] 2019 Tri-Institute Summer School on Elementary Particles (TRISEP), Vancouver, Canada
• Jul 23 - Moon Occults Asteroid 21 Lutetia
• Jul 23 - Comet 215P/NEAT At Opposition (2.634 AU)
• Jul 23 - Comet P/2009 Q4 (Boattini) At Opposition (3.067 AU)
• Jul 23 - Comet 365P/PANSTARRS At Opposition (3.086 AU)
• Jul 23 - Asteroid 2 Pallas Occults UCAC5 543-052634 (12.5 Magnitude Star)
• Jul 23 - Amor Asteroid 18106 Blume Closest Approach To Earth (0.619 AU)
• Jul 23 - Amor Asteroid 1943 Anteros Closest Approach To Earth (1.061 AU)
• Jul 23 - Asteroid 149 Medusa Closest Approach To Earth (1.206 AU)
• Jul 23 - Asteroid 1495 Helsinki Closest Approach To Earth (1.268 AU)
• Jul 23 - Asteroid 45 Eugenia (2 Moons) Closest Approach To Earth (1.600 AU)
• Jul 23 - Asteroid 22754 Olympus Closest Approach To Earth (1.957 AU)
• Jul 23 - Asteroid 51828 Ilanramon Closest Approach To Earth (2.066 AU)
• Jul 23 - 20th Anniversary (1999), Chandra X-Ray Observatory Launch (STS-93, Space Shuttle Columbia)
• Jul 23 - 35th Anniversary (1984), Discovery of Neptune's Rings
• Jul 23-25 - NASA Exploration Science Forum, Mountain View, California
• Jul 23-26 - Conference: A Centenary of Astrophysical Jets - Observation, Theory and Future Prospects, Manchester, United Kingdom
• Jul 24 - Mercury Passes 5.7 Degrees From Venus
• Jul 24 - Comet P/2006 S1 (Christensen) Closest Approach To Earth (0.890 AU)
• Jul 24 - Comet P/2007 T4 (Gibbs) Perihelion (2.005 AU)
• Jul 24 - Comet 277P/LINEAR At Opposition (3.092 AU)
• Jul 24 - Comet 263P/Gibbs At Opposition (3.472 AU)
• Jul 24 - Comet 182P/LONEOS At Opposition (3.887 AU)
• Jul 24 - Apollo Asteroid 2015 HM10 Near-Earth Flyby (0.031 AU)
• Jul 24 - Asteroid 3130 Hillary Closest Approach To Earth (1.136 AU)
• Jul 24-Aug 01 - 2019 International Cosmic Ray Conference, Madison, Wisconsin
• Jul 25 - GPS 3A-02 Delta 4 Launch
• Jul 25 - Comet 215P/NEAT Closest Approach To Earth (2.634 AU)
• Jul 25 - Asteroid 24663 Philae Closest Approach To Earth (1.114 AU)
• Jul 25 - Apollo Asteroid 4341 Poseidon Closest Approach To Earth (1.552 AU)
• Jul 25 - Asteroid 1958 Chandra Closest Approach To Earth (1.588 AU)
• Jul 25 - 35th Anniversary (1984), 1st Woman Spacewalk (Svetlana Savitskaya)
• Jul 25-27 - Conference: Kurt Göde's Legacy - Does Future lie in the Past?, Vienna, Austria
• Jul 25-28 - 15th Atmospheric Chemistry Colloquium for Emerging Senior Scientists (ACCESS XV), Long Island, New York
• Jul 25-31 - International Union for Quaternary Science Congress, Dublin, Ireland
• Jul 25-Aug 03 -[Apr 05] Summer School on Astrophysics, Valjevo, Serbia
• Jul 26 - Comet C/2019 A9 (PANSTARRS) Perihelion (1.426 AU)
• Jul 26 - Comet 143P/Kowal-Mrkos At Opposition (3.426 AU)
• Jul 26 - Aten Asteroid 2010 PK9 Near-Earth Flyby (0.021 AU)
• Jul 26 - Atira Asteroid 2018 JB3 Closest Approach To Earth (0.434 AU)
• Jul 26 - Asteroid 341 California Closest Approach To Earth (0.791 AU)
• Jul 26 - Asteroid 9963 Sandage Closest Approach To Earth (0.923 AU)
• Jul 26 - Asteroid 1777 Gehrels Closest Approach To Earth (1.657 AU)
• Jul 26-28 - NASA Exploration Science Forum, Mountain View, California
• Jul 27 - Comet P/2010 H2 (Vales) At Opposition (2.993 AU)
• Jul 27 - Asteroid 2675 Tolkien Closest Approach To Earth (1.095 AU)
• Jul 27 - Asteroid 2700 Baikonur Closest Approach To Earth (1.992 AU)
• Jul 28 - Asteroid 12397 Peterbrown Closest Approach To Earth (2.404 AU)
• Jul 28 - 30th Anniversary (1989), Stephen Synnott's Discovery of Neptune Moons Despina & Galatea
• Jul 28 - 55th Anniversary (1964), Ranger 7 Launch (Moon Impact Mission)
• Jul 28-30 - 6th International Conference on Space Science and Communication (IconSpace2019), Johor, Malaysia
• Jul 28-Aug 02 - Gordon Research Conference: Advances in X-Ray Sources and Novel Imaging, Characterization and Analysis Techniques, Easton, Massachusetts
• Jul 28-Aug 02 - Workshop: Time-Like Boundaries in General Relativistic Evolution Problems, Oaxaca, Mexico
• Jul 28-Aug 02 - Gordon Research Conference: Atmospheric Chemistry - New Science in Air Quality and Climate from Charney to AR6, Newry, Maine
• Jul 28-Aug 02 - 16th Annual Meeting of the Asia Oceania Geosciences Society (AOGS), Singapore
• Jul 28-Aug 07 - School: First Light - Stars, Galaxies and Black Holes in the Epoch of Re-Ionisation, Sao Paulo, Brazil
• Jul 28-Aug 09 - Workshop: Understanding Cosmological Observations, Benasque, Spain
• Jul 29 - South Delta-Aquarids Meteor Shower Peak
• Jul 29 - Comet 160P/LINEAR Closest Approach To Earth (1.205 AU)
• Jul 29 - Comet 200P/Larsen Perihelion (3.297 AU)
• Jul 29 - Comet 211P/Hill At Opposition (3.743 AU)
• Jul 29 - Apollo Asteroid 5011 Ptah Closest Approach To Earth (1.799 AU)
• Jul 29 - Jupiter Trojan 5254 Ulysses At Opposition (4.443 AU)
• Jul 29 - Plutino 2017 OF69 At Opposition (42.626 AU)
• Jul 29 - 20th Anniversary (1999), Deep Space 1, Asteroid Braille Flyby
• Jul 29 - Theodor Brorsen's 200th Birthday (1819)
• Jul 29-31 - Workshop: Nine Billion Years of Neutral Gas Evolution, Garching, Germany
• Jul 29-Aug 02 - Transiting Exoplanet Survey Satellite (TESS) Science Conference, Cambridge, Massachusetts
• Jul 29-Aug 02 - Conference: Small Galaxies, Cosmic Questions, Durham, United Kingdom
• Jul 29-Aug 02 - 5th Python in Astronomy Conference 2019, Baltimore, Maryland
• Jul 29-Aug 02 - 27th International Nuclear Physics Conference (INPC 2019), Glasgow, United Kingdom
• Jul 29-Aug 02 - 2019 International Emissions Inventory Conference - Collaborative Partnerships to Advance Science and Policy, Dallas, Texas
• Jul 29-Aug 02 -[Apr 05] 2019 Meeting of the Division of Particles adn Fields of the American Physical Society (DPF2019), Boston, Massachusetts
• Jul 29-Aug 23 - Workshop: Galaxy Evolution in a New Era of HI Surveys, Munich, Germany
• Jul 30 - Comet 178P/Hug-Bell Closest Approach To Earth (2.263 AU)
• Jul 30 - Asteroid 27363 Alvanclark Closest Approach To Earth (1.629 AU)
• Jul 30 - Asteroid 378214 Sauron Closest Approach To Earth (1.946 AU)
• Jul 31 - Progress MS-12 Soyuz-2.1a Launch (International Space Station 73P)
• Jul 31 - Comet P/2012 SB6 (Lemmon) Closest Approach To Earth (2.173 AU)
• Jul 31 - Comet 75D/Kohoutek At Opposition (3.211 AU)
• Jul 31 - Asteroid 1430 Somalia Closest Approach To Earth (1.047 AU)
• Jul 31 - Asteroid 16260 Sputnik Closest Approach To Earth (1.135 AU)
• Jul 31 - Asteroid 248750 Asteroidday Closest Approach To Earth (1.566 AU)
• Jul 31 - Apollo Asteroid 2135 Aristaeus Closest Approach To Earth (1.751 AU)
• Jul 31 - Asteroid 418532 Saruman Closest Approach To Earth (1.772 AU)
• Jul 31 - Asteroid 9860 Archaeopteryx Closest Approach To Earth (1.923 AU)
• Jul 31 - Asteroid 16626 Thumper Closest Approach To Earth (1.964 AU)
• Jul 31 - Asteroid 10377 Kilimanjaro Closest Approach To Earth (2.037 AU)
• Jul 31 - 20th Anniversary (1999), Lunar Prospector, Moon Impact
• Jul 31 - 50th Anniversary (1969), Mariner 6, Mars Flyby

August 2019

• Aug ?? - SpX-DM2 (Demo 2) Falcon 9 Launch (Internationl Space Station)
• Aug ?? - OneWeb 11-20 Soyuz-STB Fregat-MT Launch
• Aug ?? - EarthCARE Soyuz ST-B/Fregat-MT Launch
• Aug ?? - Lybid 1 Zenit-3SLBF//Fregat-SB Launch
• Aug ?? - Unicorn 2A/ Delfi-PQ 1 Vector-R Launch
• Aug ?? - SSMS (POC) Vega Launch
• Aug ?? -[Apr 03] EDRS-C/HYLAS-3 Ariane 5 Launch
• Aug ?? -[Apr 03] GSAT-30/Intelsat 39 Ariane 5 Launch
• Aug ?? -[Apr 08] Athena/ ION CubeSat Carrier/ NEMO-HD/ GHGSat C1/ Astrocast 1.1-1.10/ PICASSO/ SIMBA/ DIDO 3 Vega Launch
• Aug ?? -[Apr 08] DefenseSat A & B SSLV Launch
• Aug 01 -[Apr 08] INCA/ VCLS ElaNa/ CACTUS 1/ ExoCube 2/ MicroMAS 2b/ MiTEE 1/ PolarCube/ Q-PACE/ CAPE 3/ RadFxSat 2 (Fox 1E)/ PICS 1 & 2 LauncherOne Launch
• Aug 01 - Alpha Capricornids Meteor Shower Peak
• Aug 01 - Comet 234P/LINEAR At Opposition (3.262 AU)
• Aug 01 - Comet C/2017 U7 At Opposition (5.493 AU)
• Aug 01 - Apollo Asteroid 2012 DT32 Near-Earth Flyby (0.083 AU)
• Aug 01 - Asteroid 3306 Byron Closest Approach To Earth (0.957 AU)
• Aug 01 - Asteroid 5000 IAU Closest Approach To Earth (1.295 AU)
• Aug 01 - Asteroid 9395 Saint Michel Closest Approach To Earth (1.654 AU)
• Aug 01 - Asteroid 52246 Donaldjohanson Closest Approach To Earth (1.803 AU)
• Aug 01 - Asteroid 12846 Fullerton Closest Approach To Earth (1.946 AU)
• Aug 01 - Yury Romanenko's 75th Birthday (1944)
• Aug 01-03 - Long Wavelength Array Users Meeting, Albuquerque, New Mexico
• Aug 02 -[Apr 05] Comet P/2006 F4 Perihelion (2.334 AU)
• Aug 02 - Comet C/2017 U7 Closest Approach To Earth (5.493 AU)
• Aug 02 - Asteroid 1877 Marsden Occults TYC 7840-01158-1 (10.5 Magnitude Star)
• Aug 02 - Asteroid 166614 Zsazsa Closest Approach To Earth (1.653 AU)
• Aug 02 - Asteroid 4763 Ride Closest Approach To Earth (1.780 AU)
• Aug 02 - Asteroid 2791 Paradise Closest Approach To Earth (1.826 AU)
• Aug 02 - Apollo Asteroid 4197 Morpheus Closest Approach To Earth (3.075 AU)
• Aug 02-03 - Mount Carleton Star Party, Mount Carleton Provincial Park, Canada
• Aug 03 - Comet 366P/Spacewatch Closest Approach To Earth (2.234 AU)
• Aug 03 - Asteroid 2476 Andersen Closest Approach To Earth (1.743 AU)
• Aug 03 - Asteroid 439 Ohio Closest Approach To Earth (2.335 AU)
• Aug 03 - Asteroid 2197 Shanghai Closest Approach To Earth (2.538 AU)
• Aug 03 - Asteroid 17427 Poe Closest Approach To Earth (2.658 AU)
• Aug 03 - Plutino 2014 JP80 At Opposition (41.147 AU)
• Aug 03 - Kuiper Belt Object 2013 AT183 At Opposition (64.078 AU)
• Aug 03 - 15th Anniversary (2004), MESSENGER Delta 2 Launch
• Aug 04 - Comet 110P/Hartley At Opposition (3.330 AU)
• Aug 04 - Comet P/2018 H2 (PANSTARRS) At Opposition (3.414 AU)
• Aug 04 - Apollo Asteroid 5786 Talos Closest Approach To Earth (0.324 AU)
• Aug 04 - Asteroid 16543 Rosetta Closest Approach To Earth (1.374 AU)
• Aug 04 - Asteroid 2104 Toronto Closest Approach To Earth (2.463 AU)
• Aug 04-06 - Understanding Dust 30 Years After CCM - A Symposium in Honor of Geoff Clayton's 65th Birthday, Boulder, Colorado
• Aug 04-06 - Chemistry Climate Model Initiative (CMMi) Summer School: Earth System Modelling and Observations to Study Earth in a Changing Climate, Hong Kong
• Aug 04-10 - 15th Rencontres du Vietnam: 3 Neutrinos and Beyond, Quy Nhon, Vietnam
• Aug 05 - 50th Anniversary (1969), Mariner 7 Mars Flyby
• Aug 05 - Comet 168P/Hergenrother Perihelion (1.359 AU)
• Aug 05 - Comet 163P/NEAT Perihelion (2.067 AU)
• Aug 05 - Comet 264P/Larsen Perihelion (2.438 AU)
• Aug 05 - Apollo Asteroid 2018 AG12 Near-Earth Flyby (0.059 AU)
• Aug 05 - Aten Asteroid 136818 Selqet Closest Approach To Earth (0.749 AU)
• Aug 05 - Asteroid 12258 Oscarwilde Closest Approach To Earth (1.452 AU)
• Aug 05-07 - International Conference on Holography, String Theory and Discrete Approaches in Danang, Danang, Vietname
• Aug 05-07 -[Apr 03] GROWTH Astronomy School 2019: From X-ray to Radio - Follow up of Transients in the Era of Multi-Messenger Astronomy, San Diego, California
• Aug 05-08 - Astronomical Data Archives Meeting 2019, Sydney, Australia
• Aug 05-09 - Conference: Progenitors of Type Ia Supernovae, Lijiang, China
• Aug 05-09 - Solar Heliospheric & Interplanetary Environment (SHINE) Conference 2019, Boulder, Colorado
• Aug 05-09 -[Apr 06] NBIA Summer School on Protoplanetary Disks and Planet Formation, Copenhagen, Denmark
• Aug 05-16 - CODATA-RDA Research Data Science Summer School, Trieste, Italy
• Aug 05-16 - 12th International Neutrino Summer School 2019, Batavia, Illinois
• Aug 05-16 -[Apr 06] School on High Energy Astrophysics, Sao Paulo, Brazil
• Aug 06 - 5th Anniversary (2014), Rosetta, Comet 67P/Churyumov-Gerasimenko Orbit Insertion
• Aug 06 - Southern Iota Aquarids Meteor Shower Peak
• Aug 06 - Apollo Asteroid 1865 Cerberus Closest Approach To Earth (0.501 AU)
• Aug 06 - Asteroid 6001 Thales Closest Approach To Earth (1.691 AU)
• Aug 06 - Asteroid 5281 Lindstrom Closest Approach To Earth (1.859 AU)
• Aug 06 - Amor Asteroid 5751 Zao Closest Approach To Earth (2.205 AU)
• Aug 06-08 - New Cometary Insights from the Close Approach of 46P/Wirtanen: A Symposium in Celebration of Mike A'Hearn, College Park, Maryland
• Aug 06-08 - 12th Great Lakes Cosmology Workshop: Large Scale Structures from Surveys, Rochester, New York
• Aug 06-09 - Meeting: Quasars in Crisis, Edinburgh, United Kingdom
• Aug 07 - Comet 210P/Christensen Closest Approach To Earth (2.280 AU)
• Aug 07 - Apollo Asteroid 37655 Illapa Closest Approach To Earth (0.926 AU)
• Aug 07 - Asteroid 4342 Freud Closest Approach To Earth (1.500 AU)
• Aug 07 - Asteroid 784 Pickeringia Closest Approach To Earth (1.684 AU)
• Aug 07 - Asteroid 15495 Bogie Closest Approach To Earth (1.845 AU)
• Aug 07 - 50th Anniversary (1969), Andreevka Meteorite Fall (Hit House in USSR)
• Aug 07 - Centaur Object 83982 Crantor At Opposition (18.241)
• Aug 07-09 - 10th Planetary Crater Consortium Meeting, Flagstaff, Arizona
• Aug 07-09 - 9th Sessions of the United Nations Committee of Experts on Global Geospatial Information Management (UN-GGIM), New York, New York
• Aug 07-09 - Chemistry Climate Model Initiative (CMMi) Science Workshop, Hong Kong
• Aug 08 - Asteroid 13688 Oklahoma Closest Approach To Earth (1.665 AU)
• Aug 08 - Asteroid 8283 Edinburgh Closest Approach To Earth (1.722 AU)
• Aug 08 - Asteroid 9357 Venezuela Closest Approach To Earth (1.825 AU)
• Aug 08 - Asteroid 284891 Kona Closest Approach To Earth (2.492 AU)
• Aug 08 - Asteroid 3709 Polypoites Closest Approach To Earth (4.423 AU)
• Aug 08 - Kuiper Belt Object 2008 OG19 At Opposition (37.763 AU)
• Aug 08 - Lecture: Small Worlds, Big Science, Pasadena, California
• Aug 08 - 30th Anniversary (1989), STS-28 Launch (Space Shuttle Columbia, DOD Mission)
• Aug 08 - 50th Anniversary (1969), Zond 7 Launch (Soviet Moon Mission)
• Aug 09 - Mercury At Its Greatest Western Elongation (19 Degrees)
• Aug 09 - Comet P/2006 W1 (Gibbs) Closest Approach To Earth (2.053 AU)
• Aug 09 - Comet C/2018 V2 (ATLAS) Closest Approach To Earth (2.601 AU)
• Aug 09 - Comet C/2018 EN4 (NEOWISE) At Opposition (4.050 AU)
• Aug 09 - Asteroid 9134 Encke Closest Approach To Earth (1.805 AU)
• Aug 09 - Asteroid 5471 Tunguska Closest Approach To Earth (1.826 AU)
• Aug 09 - Asteroid 2069 Hubble Closest Approach To Earth (2.708 AU)
• Aug 09 - Asteroid 10063 Erinleeryan Closest Approach To Earth (3.065 AU)
• Aug 09 - Lecture: Small Worlds, Big Science, Pasadena, California
• Aug 09 - 15th Anniversary (2004), Franck Marchis, et al's Discovery of Remus, Moon of Asteroid 87 Sylvia
• Aug 09 - Jose De Queiroz's 65th Birthday (1954)
• Aug 09 - Jonathan Lane's 200th Birthday (1819)
• Aug 10 - Aten Asteroid 2006 QQ23 Near-Earth Flyby (0.050 AU)
• Aug 10 - Apollo Asteroid 2005 CL7 Near-Earth Flyby (0.068 AU)
• Aug 10 - Asteroid 1278 Kenya Closest Approach To Earth (0.789 AU)
• Aug 10 - Jupiter Trojan 1143 Odysseus At Opposition (4.586 AU)
• Aug 10 - Lecture: Astrobiology Under Our Feet & Out to the Stars, Mt. Tamalpais State Park, California
• Aug 10 - Griffith Observatory Public Star Party, Los Angeles
• Aug 10 - 5th Anniversary (2014), ISEE-3, Earth Flyby, Successful
• Aug 11 - Comet 331P/Gibbs Closest Approach To Earth (1.991 AU)
• Aug 11 - Comet 331P/Gibbs At Opposition (1.991 AU)
• Aug 11 - Comet 367P/Catalina Closest Approach To Earth (2.320 AU)
• Aug 11 - Asteroid 3761 Romanskaya Occults HIP 92984 (6.6 Magnitude Star)
• Aug 11 - Asteroid 16 Psyche Closest Approach To Earth (1.701 AU)
• Aug 11 - Asteroid 12760 Maxwell Closest Approach To Earth (1.778 AU)
• Aug 11-17 - 15th Recontres du Vietnam: Cosmology, Quy Nhon, Vietnam
• Aug 11-17 - 4th Summer School on Speleothem Science, Cluj-Napoca, Romania
• Aug 12 - Moon Occults Saturn
• Aug 12 - Moon Occults Dwarf Planet Pluto
• Aug 12 - Perseids Meteor Shower Peak
• Aug 12 - Asteroid 21 Lutetia Occults UCAC5 449-000914 (11.1 Magnitude Star)
• Aug 12 - Apollo Asteroid 454094 (2013 BZ45) Near-Earth Flyby (0.044 AU)
• Aug 12 - Atira Asteroid 2013 JX28 Closest Approach To Earth (0.640 AU)
• Aug 12 - Asteroid 1855 Korolev Closest Approach To Earth (1.375 AU)
• Aug 12 - Asteroid 4457 van Gogh Closest Approach To Earth (1.964 AU)
• Aug 12-15 - ExoClimes V Conference: The Diversity of Planetary Atmospheres, Oxford, United Kindgom
• Aug 12-16 - LSST 2019 Project and Community Workshop, Tucson, Arizona
• Aug 12-16 - Conference: From AGN to Starburst - A Multi-wavelength Synergy, Guiyang, China
• Aug 12-16 - Workshop: Improving Image Fidelity on Astronomical Data - Radio Interferometer and Single-Dish Data Combination, Leiden, The Netherlands
• Aug 12-16 - 12th Meeting on Cosmic Dust, Narashino, Japan
• Aug 13 - Comet P/2002 S7 (SOHO) Closest Approach To Earth (2.081 AU)
• Aug 13 - Aten Asteroid 2017 QK18 Near-Earth Flyby (0.076 AU)
• Aug 13 - Apollo Asteroid 5143 Heracles Closest Approach To Earth (0.673 AU)
• Aug 13 - Asteroid 10799 Yucatan Closest Approach To Earth (1.080 AU)
• Aug 13 - Aten Asteroid 5381 Sekmet Closest Approach To Earth (1.292 AU)
• Aug 13 - Asteroid 19367 Pink Floyd Closest Approach To Earth (1.319 AU)
• Aug 13 - Asteroid 48472 Mossbauer Closest Approach To Earth (1.429 AU)
• Aug 13 - Anders Angstrom's 205th Birthday (1814)
• Aug 13-16 - 6th Dark Matter @ LHC 2019 Workshop, Seattle, Washington
• Aug 13-17 - 1st NARIT-EACOA Summer Workshop on Astrostatistics & Astroinformatics, Chgian Mai, Thailand
• Aug 14 - Asteroid 4864 Nimoy Closest Approach To Earth (1.034 AU)
• Aug 14 - Asteroid 278141 Tatooine Closest Approach To Earth (1.623 AU)
• Aug 14 - Asteroid 72432 Kimrobinson Closest Approach To Earth (1.652 AU)
• Aug 14 - Centaur Object 365756 ISON At Opposition (7.598 AU)
• Aug 14 - Kuiper Belt Object 2015 UH87 At Opposition (80.619 AU)
• Aug 14 - 20th Anniversary (1999), Galileo, Callisto 22 Flyby
• Aug 15 - Dwarf Planet Ceres Occults UCAC5 344-074929 (12.2 Magnitude Star)
• Aug 15 - Atira Asteroid 481817 (2008 UL90) Closest Approach To Earth (0.579 AU)
• Aug 15 - Asteroid 9937 Triceratops Closest Approach To Earth (0.996 AU)
• Aug 15 - 30th Anniversary (1989), Sixiangkou Meteorite Fall (Hit House in China)
• Aug 16 - Comet 79P/du Toit-Hartley Closest Approach To Earth (2.322 AU)
• Aug 16 - Comet C/2018 R5 (Lemmon) Closest Approach To Earth (3.325 AU)
• Aug 16 - Amor Asteroid 3757 Anagolay Closest Approach To Earth (1.237 AU)
• Aug 16 - Asteroid 6524 Baalke Closest Approach To Earth (1.312 AU)
• Aug 16 - Valeri Ryumin's 80th Birthday (1939)
• Aug 16 - Pierre Mechain's 275th Birthday (1744)
• Aug 16-24 - 5th Indo-French Astronomy School (IFAS5): Spectroscopy & Spectrographs, Pune, India
• Aug 17 -[Apr 03] Crew Space Transportation 100 (CST-100) Atlas 5 Launch (Unmanned)
• Aug 17 - Comet 112P/Urata-Niijima At Opposition (1.394 AU)
• Aug 17 - Comet P/2012 K3 (Gibbs) Perihelion (2.089 AU)
• Aug 17 - Comet 366P/Spacewatch At Opposition (2.259 AU)
• Aug 17 - Comet 25D/Neujmin Closest Approach To Earth (2.275 AU)
• Aug 17 - Apollo Asteroid 141593 (2002 HK12) Near-Earth Flyby (0.062 AU)
• Aug 17 - Jupiter Trojan 588 Achilles At Opposition (4.574 AU)
• Aug 18 - Hyperbolic Object A/2018 V3 At Opposition (0.375 AU)
• Aug 18 - Comet 25D/Neujmin Perihelion (1.291 AU)
• Aug 18 - Asteroid 2801 Huygens Closest Approach To Earth (1.366 AU)
• Aug 18 - Asteroid 1815 Beethoven Closest Approach To Earth (2.605 AU)
• Aug 18 - 20th Anniversary (1999), Cassini, Earth Flyby
• Aug 18 - 45th Anniversary (1974), Naragh Meteorite Fall (Hit Building in Iran)
• Aug 18-23 - Goldschmidt Geochemistry Conference, Barcelona, Spain
• Aug 18-25 - CosmoCruise2019: From the Early to the Late Universe, Venice, Italy
• Aug 18-Sep 15 - Workshop: Astrophysics in the LIGO/Virgo Era, Aspen, Colorado
• Aug 19 - Moon Occults Asteroid 21 Lutetia
• Aug 19 - Hyperbolic Object A/2018 V3 Closest Approach To Earth (0.374 AU)
• Aug 19 - Comet C/2018 F1 (Grauer) At Opposition (3.074 AU)
• Aug 19 - Comet C/2018 C2 (Lemmon) At Opposition (4.285 AU)
• Aug 19 - Asteroid 4125 Lew Allen Closest Approach To Earth (0.806 AU)
• Aug 19 - Asteroid 4871 Riverside Closest Approach To Earth (1.198 AU)
• Aug 19 - Asteroid 16857 Goodall Closest Approach To Earth (1.677 AU)
• Aug 19 - Asteroid 8657 Cedrus Closest Approach To Earth (1.837 AU)
• Aug 19 - Asteroid 157064 Sedona Closest Approach To Earth (2.152 AU
• Aug 19 - Asteroid 5335 Damocles (Burnt Out Comet) At Opposition (18.610 AU)
• Aug 19 - Willard Boyle's 95th Birthday (1924)
• Aug 19-21 - Cyprus Gravity and Cosmology Conference 2019 (CGC2019), Kyrenia, Cyprus
• Aug 19-22 - 2019 AIAA Propulsion and Energy Forum, Indianapolis, Indiana
• Aug 19-22 - Conference: Hot-Wiring the Transient Universe VI, Evanston, Illinois
• Aug 19-22 - Gravity Meets Plasma Workshop, Kunming, China
• Aug 19-22 - 10th VISTA Variables in the Via Lactea (VVV) Science Meeting, Hilo, Hawaii
• Aug 19-23 - Extreme Solar Systems IV Conference Reykjavik, Iceland
• Aug 19-23 - Conference: Stars and their Variability, Observed from Space - Celebrating the 5th Anniversary of BRITE-Constellation, Vienna, Austria
• Aug 19-23 - Workshop: Quantum Information in Quantum Gravity V, Davis, California
• Aug 19-23 - Workshop: The Cosmic Web in the Local Universe, Leiden, The Netherlands
• Aug 19-23 - CODATA-RDA Research Data Science Advanced Workshops on Bio-informatics, Climate Data Sciences, Extreme Sources of Data and Internet of Things(IoT)/Big-Data Analytics, Trieste, Italy
• Aug 19-23 - Advanced School on American Monsoons - Progress and Future Plans, Sao Paulo, Brazil
• Aug 20 - Comet P/2015 X6 (PANSTARRS) At Opposition (1.836 AU)
• Aug 20 - Comet C/2017 B3 (LINEAR) Closest Approach To Earth (3.480 AU)
• Aug 20 - Asteroid 10093 Diesel Closest Approach To Earth (1.194 AU)
• Aug 20 - Asteroid 2044 Wirt Closest Approach To Earth (2.033 AU)
• Aug 20 - Asteroid 2191 Uppsala Closest Approach To Earth (2.065 AU)
• Aug 20 - Amor Asteroid 4503 Cleobulus Closest Approach To Earth (2.883 AU)
• Aug 20 - Jons Berzelius' 240th Birthday (1779)
• Aug 21 - Comet P/2008 Y12 (SOHO) Closest Approach To Earth (0.620 AU)
• Aug 21 - Comet 36P/Whipple At Opposition (2.330 AU)
• Aug 21 - Asteroid 675 Ludmilla Occults HIP 13209 (4.0 Magnitude Star)
• Aug 21 - Aten Asteroid 2008 PR9 Near-Earth Flyby (0.044 AU)
• Aug 21 - Asteroid 3590 Holst Closest Approach To Earth (1.406 AU)
• Aug 21 - Asteroid 589 Croatia Closest Approach To Earth (2.101 AU)
• Aug 21 - Apollo Asteroid 2201 Oljato Closest Approach To Earth (2.393 AU)
• Aug 21 - Centaur Object 52872 Okyrhoe At Opposition (9.895 AU)
• Aug 21 - 20th Anniversary (1999), Discovery of Dar al Gani 975 Meteorite (Mars Meteorite) in Libya
• Aug 21 - Michael Van Ness' 45th Birthday (1974)
• Aug 21 - Augustin-Louis Cauchy's 230th Birthday (1789)
• Aug 22 - Soyuz MS-14 Soyuz-2.1a Launch (International Space Station 60S)
• Aug 22 - Comet 367P/Catalina At Opposition (2.336 AU)
• Aug 22 - Comet C/2018 V2 (ATLAS) At Opposition (2.646 AU)
• Aug 22 - Comet 52P/Harrington-Abell At Opposition (4.069 AU)
• Aug 22 - Asteroid 78453 Bullock Closest Approach To Earth (1.798 AU)
• Aug 22 - Asteroid 1042 Amazone Closest Approach To Earth (2.054 AU)
• Aug 22 - 35th Anniversary (1984), Tomiya Meteorite Fall (Hit Houses in Japan)
• Aug 22 - Samuel Langley's 185th Birthday (1834)
• Aug 22-28 - 19th Lomonosov Conference on Elementary Particle Physics, Moscow, Russia
• Aug 23 - Asteroid 21 Lutetia Occults UCAC5 447-000892 (12.0 Magnitude Star)
• Aug 23 - Asteroid 3635 Kreutz Closest Approach To Earth (1.032 AU)
• Aug 23 - Asteroid 3494 Purple Mountain Closest Approach To Earth (1.066 AU)
• Aug 23 - Asteroid 25399 Vonnegut Closest Approach To Earth (1.820 AU)
• Aug 23 - Asteroid 70713 Sethmacfarlane Closest Approach To Earth (1.912 AU)
• Aug 24 - Venus Passes 0.3 Degrees From Mars
• Aug 24 - Comet P/2013 TL117 At Opposition (3.404 AU)
• Aug 24 - Comet 94P/Russell At Opposition (3.716 AU)
• Aug 24 - Apollo Asteroid 162173 Ryugu Closest Approach To Earth (1.566 AU)
• Aug 24 - Asteroid 1284 Latvia Closest Approach To Earth (1.574 AU)
• Aug 24 - Asteroid 203 Pompeja Closest Approach To Earth (1.684 AU)
• Aug 24 - Asteroid 8734 Warner Closest Approach To Earth (1.783 AU)
• Aug 24 - Jupiter Trojan 911 Agamemnon At Opposition (4.239 AU)
• Aug 24 - Anna Lee Fisher's 70th Birthday (1949)
• Aug 24 - Greg Jarvis' 75th Birthday (1944)
• Aug 25 - Northern Iota Aquarids Meteor Shower Peak
• Aug 25 - Comet P/2015 X6 (PANSTARRS) Closest Approach To Earth (1.833 AU)
• Aug 25 - Comet 180P/NEAT At Opposition (3.957 AU)
• Aug 25 - Aten Asteroid 2003 YG136 Near-Earth Flyby (0.051 AU)
• Aug 25 - Aten Asteroid 66146 (1998 TU3) Near-Earth Flyby (0.074 AU)
• Aug 25 - Asteroid 28600 Georgelucas Closest Approach To Earth (1.042 AU)
• Aug 25 - 30th Anniversary (1989), Voyager 2, Neptune Flyby
• Aug 25 - Vincenzo Silvano Casulli's 75th Birthday (1944)
• Aug 25 - Ron Greeley's 80th Birthday (1939)
• Aug 25-29 - 258th National Meeting of the Astrochemistry Subdivision of the American Chemical Society: Water in the Universe, San Diego, California
• Aug 25-29 - St. Andrews Monte Carlo Radiation Hydrodynamics Summer School, St. Andrews, Scotland
• Aug 25-30 - Conference: Star on the Run II, Potsdam, Germany
• Aug 25-30 - European Aerosol Conference (EAC 2019), Gothenburg, Sweden
• Aug 25-30 - 2019 Ada Lovelace Workshop: Modelling Mantle and Lithospheric Dynamics, Siena, Italy
• Aug 25-Sep 15 - Workshop: Non-Standard Cosmology Probes, Aspen, Colorado
• Aug 26 - Amor Asteroid 2016 PD1 Near-Earth Flyby (0.029 AU)
• Aug 26 - Apollo Asteroid 2015 TY237 Near-Earth Flyby (0.086 AU)
• Aug 26 - Apollo Asteroid 2005 QQ87 Near-Earth Flyby (0.091 AU)
• Aug 26 - Atira Asteroid 413563 (2005 TG45) Closest Approach To Earth (0.822 AU)
• Aug 26 - Asteroid 21459 Chrisrussell Closest Approach To Earth (1.048 AU)
• Aug 26 - Asteroid 11246 Orvillewright Closest Approach To Earth (1.082 AU)
• Aug 26 - Asteroid 224693 Morganfreeman Closest Approach To Earth (1.935 AU)
• Aug 26-29 - 49th Young European Radio Astronomers Conference, Dublin, Ireland
• Aug 26-29 - Chapman Conference: Understanding Carbon Climate Feedbacks, San Diego, California
• Aug 26-29 - 2019 Hypersonic Technology & Systems Conference, Springfield, Virginia
• Aug 26-30 - Astro Hack Week 2019, Cambridge, United Kingdom
• Aug 26-30 - 9th Solar Polarization Workshop (SPW9), Goettingen, Germany
• Aug 26-30 - Meeting: Understanding the Nearby Star Forming Universe with JWST, Courmayeur, Aosta Valley, Italy
• Aug 26-30 -[Apr 09] Workshop: Nebulae - Deep-Space Computing Clouds, Pasadena, California
• Aug 26-30 - 5th UK-Ukraine-Spain Meeting on Solar Physics and Space Science (UKUS), Kyiv, Ukraine.
• Aug 26-30 - 26th Colloquium on High-Resolution Molecular Spectroscopy HRMS, Dijon, France
• Aug 26-30 - 2019 Glacial Isostatic Adjustment (GIA) Training School, Gavle, Sweden
• Aug 26-31 - Summer School: Natural Space Risks, Paris, France
• Aug 26-31 - Summer School on BSM Particle Physics and Cosmology, Ljubljana, Slovenia
• Aug 26-Sep 20 - Workshop: Precision Gravity - From the LHC to LISA, Munich, Germany
• Aug 26-Sep 20 - Program: Gravitational Waves from the Early Universe, Stockholm, Sweden
• Aug 27 - Comet 322P/SOHO Closest Approach To Earth (0.883 AU)
• Aug 27 - Comet 36P/Whipple Closest Approach To Earth (2.325 AU)
• Aug 27 - Aten Asteroid 2002 JR100 Near-Earth Flyby (0.050 AU)
• Aug 27 - Apollo Asteroid 153814 (2001 WN5) Near-Earth Flyby (0.098 AU)
• Aug 27 - Asteroid 274301 Wikipedia Closest Approach To Earth (1.031 AU)
• Aug 27 - Asteroid 13010 Germantitov Closest Approach To Earth (2.216 AU)
• Aug 27 - 20th Anniversary (1999), Discovery of Salty Water in Monahans Meteorite
• Aug 28 - Soyuz GVK Soyuz-2.1b Launch
• Aug 28 - Comet 105P/Singer Brewster Closest Approach To Earth (2.284 AU)
• Aug 28 - Apollo Asteroid 54509 YORP Closest Approach To Earth (0.755 AU)
• Aug 28 - Asteroid 20403 Attenborough Closest Approach To Earth (1.972 AU)
• Aug 28 - Amor Asteroid 1915 Quetzalcoatl Closest Approach To Earth (2.980 AU)
• Aug 28 - Kuiper Belt Object 225088 (2007 OR10) At Opposition (87.294 AU)
• Aug 28 - 10th Anniversary (2009), STS-128 Launch (Space Shuttle Discovery, Multi-Purpose Logistics Module Leonardo)
• Aug 28 - 230th Anniversary (1789), William Herschel's Discovery of Saturn Moon Enceladus
• Aug 28-31 - Conference: Mass Extinctions, Recovery and Resilience, Utrecht, The Netherlands
• Aug 28-Sep 05 - 4th OBSPM/LAM Summer School: Galaxy Formation and Evolution in a Cosmological Context, Spetses, Greece
• Aug 29 - Apollo Asteroid 2008 SJ82 Near-Earth Flyby (0.068 AU)
• Aug 29 - Asteroid 52301 Qumran Closest Approach To Earth (0.981 AU)
• Aug 29 - Asteroid 2169 Taiwan Closest Approach To Earth (1.789 AU)
• Aug 29 - Chris Hadfield's 60th Birthday (1959)
• Aug 29-Sep 03 - 33rd URSI General Assembly and Scientific Symposium, Rome, Italy
• Aug 29-Sep 08 - 7th International Conference: Large Igneous Provinces through Earth History - Mantle Plumes, Supercontinents, Climate Change, Metallogeny and Oil-Gas, Planetary Analogues, Tomsk, Russia
• Aug 30 - Comet 26P/Grigg-Skjellerup Closest Approach To Earth (2.402 AU)
• Aug 30 - Asteroid 1501 Baade Closest Approach To Earth (1.162 AU)
• Aug 30 - Asteroid 75564 Audubon Closest Approach To Earth (1.616 AU)
• Aug 30 - Asteroid 3131 Mason-Dixon Closest Approach To Earth (2.018 AU)
• Aug 30 - Asteroid 8373 Stephengould Closest Approach To Earth (4.177 AU)
• Aug 30 - 35th Anniversary (1984), STS-41-D Launch (Space Shuttle Discovery)
• Aug 30 - 40th Anniversary (1979), 1st Obvservation of a Comet Collision with the Sun (Comet Howard-Koomen-Michels with SOLWIND I)
• Aug 30-31 - Fundy Park Stargaze, Fundy National Park, Canada
• Aug 30-Sep 02 - Spruce Woods Star Party, Spruce Woods Provincial Park, Canada
• Aug 31 - Comet C/2018 R5 (Lemmon) At Opposition (3.360 AU)
• Aug 31 - Asteroid 130 Elektra (2 Moons) Closest Approach To Earth (1.615 AU)

September 2019

• Sep ?? - HTV-8 H-2B Launch (International Space Station)
• Sep ?? - GISAT 1 PSLV-II Launch
• Sep ?? - GSAT-20 GSLV Mk III Launch
• Sep 01 - Parker Solar Probe, 3rd Perihelion
• Sep 01 - Comet 322P/SOHO Perihelion (0.062 AU)
• Sep 01 - Apollo Asteroid 1620 Geographos Closest Approach To Earth (0.137 AU)
• Sep 01 - Asteroid 3623 Chaplin Closest Approach To Earth (1.614 AU)
• Sep 01 - Kuiper Belt Object 408706 (2004 NT33) At Opposition (38.417 AU)
• Sep 01 - 40th Anniversary (1979), Pioneer 11, Saturn Flyby
• Sep 01 - 160th Anniversary (1859), Solar Storm of 1859
• Sep 01-06 -[Apr 06] Conference: Particle Astrophysics and Cosmology Including Fundamental InteraCtions (PACIFIC 2019), Moorea, French Polynesia
• Sep 01-06 - Conference: Matter To The Deepest - Recent Developments In Physics Of Fundamental Interactions, Katowice, Poland
• Sep 02 - Comet P/2012 O2 (McNaught) Closest Approach To Earth (1.250 AU)
• Sep 02 - Comet C/2017 M5 (TOTAS) Closest Approach To Earth (5.815 AU)
• Sep 02 - Asteroid 4122 Ferrari Closest Approach To Earth (1.668 AU)
• Sep 02 - Asteroid 243 Ida Closest Approach To Earth (1.867 AU)
• Sep 02 - Asteroid 1541 Estonia Closest Approach To Earth (1.919 AU)
• Sep 02 - Kuiper Belt Object 2003 QX113 At Opposition (59.251 AU)
• Sep 02 - Guy Laliberte's 60th Birthday (1959)
• Sep 02 - 215th Anniversary (1804), Karl Harding's Discovery of Asteroid 3 Juno
• Sep 02-06 - Conference: Views on the Interstellar Medium in Galaxies in the ALMA Era, Bologna, Italy
• Sep 02-06 - Conference: Celebrating the First 40 Years of Alexander Tielens' Contribution to Science - The Physics and Chemistry of the ISM, Avignon, France
• Sep 02-06 - Conference: Matera Oscura - Cosmology and Dark Matter with Galaxies and Cluster, Matera, Italy
• Sep 02-06 - COSMO '19 Conference, Aachen, Germany
• Sep 02-06 - Meeting: The Physics and Chemistry of the Interstellar Medium, Palais des Papes-Avignon, France
• Sep 02-06 - 18th Workshop on High Energy Spin Physics (DSPIN-19), Moscow, Russia
• Sep 02-06 - Hinode-13/IPELS 2019 Meeting: Fundamental Plasma Processes in the Sun, Interplanetary Space, and in the Laboratory, Tokyo, Japan
• Sep 02-08 - Global Ocean Oxygen Network (GO2NE) International Summer School, Xiamen, China
• Sep 02-09 - Conference: Twistors and Loops Meeting in Marseille, Marseille, France
• Sep 02-13 - Dark Matter and Weak Interactions (DARKWIN) Conference, Natal, Brazil
• Sep 02-13 -[Apr 07] 25th Saalburg Summer School: Foundations and New Methods in Theoretical Physics, Heigenbrucken, Bavaria, Germany
• Sep 03 - Mercury Passes 0.7 Degrees from Mars
• Sep 03 - Apollo Asteroid 2018 DE1 Near-Earth Flyby (0.033 AU)
• Sep 03 - Apollo Asteroid 137052 Tjelvar Closest Approach To Earth (0.671 AU)
• Sep 03 - Asteroid 96192 Calgary Closest Approach To Earth (0.998 AU)
• Sep 03 - Asteroid 49272 Bryce Canyon Closest Approach To Earth (1.493 AU)
• Sep 03 - Centaur Object 7066 Nessus At Opposition (27.851 AU)
• Sep 03 - Kuiper Belt Object 307982 (2004 PG115) At Opposition (37.694 AU)
• Sep 03 - Carl Stormer's 145th Birthday (1874)
• Sep 03-06 - Conference: Geometry and Strings 2019, Oxford, United Kingdom
• Sep 03-06 - Conference: GeoInformation for Disaster Management (Gi4DM), Prague, Mauritania
• Sep 04 - Comet C/2019 A9 (PANSTARRS) Closest Approach To Earth (1.916 AU)
• Sep 04 - Comet 233P/La Sagra At Opposition (2.201 AU)
• Sep 04 - Comet 79P/du Toit-Hartley At Opposition (2.373 AU)
• Sep 04 - Asteroid 1831 Nicholson Closest Approach To Earth (1.207 AU)
• Sep 04 - Asteroid 472 Roma Closest Approach To Earth (1.504 AU)
• Sep 04 - Asteroid 232 Russia Closest Approach To Earth (1.859 AU)
• Sep 04 - Jupiter Trojan 3063 Makhaon At Opposition (4.483 AU)
• Sep 04 - Plutino 175113 (2004 PF115) At Opposition (40.585 AU)
• Sep 04 - Kuiper Belt Object 120178 (2003 OP32) At Opposition (41.470 AU)
• Sep 04-05 - 7th International Conference on Sustainable Development (ICSD 2019), Rome, Italy
• Sep 04-06 - 7th International Colloquium on Scientific and Fundamental Aspects of GNSS, Zurich, Switzerland
• Sep 04-17 - 2019 European School of High-Energy Physics (ESHEP 2019), St. Petersburg, Russia
• Sep 05 - Comet C/2018 W2 (Africano) Perihelion (1.455 AU)
• Sep 05 - Comet P/2011 A2 (Scotti) At Opposition (3.538 AU)
• Sep 05 - Dwarf Planet Pluto Occults UCAC5 339-167569 (13.4 Magnitude Star)
• Sep 05 - Aten Asteroid 2006 SE6 Near-Earth Flyby (0.072 AU)
• Sep 05 - Asteroid 1578 Kirkwood Closest Approach To Earth (2.850 AU)
• Sep 05 - 55th Anniversary (1964), Orbiting Geophysical Observatory (OGO-1) Launch
• Sep 05 - Ian Glass' 80th Birthday (1939)
• Sep 05 - Andriyan Nikolayev's 90th Birthday (1929)
• Sep 06 - Comet C/2017 B3 (LINEAR) At Opposition (3.517 AU)
• Sep 06 - Apollo Asteroid 465617 (2009 EK1) Near-Earth Flyby (0.057 AU)
• Sep 06 - Apollo Asteroid 1566 Icarus Closest Approach To Earth (0.439 AU)
• Sep 06 - Apollo Asteroid 4660 Nereus Closest Approach To Earth (0.781 AU)
• Sep 06 - American Astronomical Society's 120th Birthday (1899)
• Sep 07 - Comet P/2000 S4 (LINEAR-Spacewatch) At Opposition (1.274 AU)
• Sep 07 - Comet P/2005 J1 (McNaught) Closest Approach To Earth (2.503 AU)
• Sep 07 - Apollo Asteroid 2016 LT1 Near-Earth Flyby (0.073 AU)
• Sep 07 - Asteroid 25930 Spielberg Closest Approach To Earth (0.956 AU)
• Sep 07 - Asteroid 9885 Linux Closest Approach To Earth (1.398 AU)
• Sep 07 - Asteroid 1241 Dysona Closest Approach To Earth (2.057 AU)
• Sep 07 - Asteroid 2421 Nininger Closest Approach To Earth (2.115 AU)
• Sep 07 - Lecture: MISSION - Mars, Mt. Tamalpais State Park, California
• Sep 07 - Griffith Observatory Public Star Party, Los Angeles
• Sep 07 - James Van Allen's 105th Birthday (1914)
• Sep 07-11 - Conference: Universe of Binaries, Binaries in the Universe, Telc, Czech Republic
• Sep 08 - Moon Occults Saturn
• Sep 08 - Hyperbolic Object A/2018 V3 Perihelion (1.340 AU)
• Sep 08 - Asteroid 17024 Costello Closest Approach To Earth (1.352 AU)
• Sep 08 - Asteroid 386622 New Zealand Closest Approach To Earth (1.358 AU)
• Sep 08 - Asteroid 34901 Mauna Loa Closest Approach To Earth (2.253 AU)
• Sep 08 - 15th Anniversary (2004), Genesis, Return To Earth
• Sep 08 - Heinrich Kreutz's 165th Birthday (1854)
• Sep 08-12 - Conference: The First Billion Years: Habitability, Big Sky, Montana
• Sep 08-13 - X-Ray Astronomy 2019 Conference: Current Challengs and New Frontiers in the Next Decade, Bologna, Italy
• Sep 08-21 - International Summer Workshop on High Energy Physics (TAE 2019), Benasque, Spain
• Sep 09 - Moon Occults Dwarf Planet Pluto
• Sep 09 - Neptune At Opposition
• Sep 09 - Comet 289P/Blanpain At Opposition (0.667 AU)
• Sep 09 - Comet P/2000 S4 (LINEAR-Spacewatch) Closest Approach To Earth (1.274 AU)
• Sep 09 - Asteroid 4659 Roddenberry Closest Approach To Earth (0.936 AU)
• Sep 09 - Atira Asteroid 2015 ME131 Closest Approach To Earth (1.268 AU)
• Sep 09 - Apollo Asteroid 2008 HU4 Closest Approach To Earth (1.692 AU)
• Sep 09 - Asteroid 10866 Peru Closest Approach To Earth (1.715 AU)
• Sep 09 - Kuiper Belt Object 145452 (2005 RN43) At Opposition (39.613 AU)
• Sep 09 - 25th Anniversary (1994), STS-64 Launch (Space Shuttle Discovery, LITE)
• Sep 09 - 85th Anniversary (1934), 1st Rocket to Break the Sound Barrier (ARS-4)
• Sep 09 - 180th Annviversary (1839), John Hershel Makes 1st Photograph Using Glass Plate
• Sep 09 - William Bond's 230th Birthday (1789)
• Sep 09-12 - Conference: Connecting Micro and Macro Scales - Acceleration, Reconnection, and Dissipation in Astrophysical Plasmas, Santa Barbara, California
• Sep 09-13 - 16th Biennial International Conference on Topics in Astroparticle and Underground Physics (TAUP 2019), Toyama, Japan
• Sep 09-13 - Conference: The Pleiades and Friends - Stellar Associations in the Gaia Era, A Coruna, Spain
• Sep 09-13 - Workshop: CEMP Stars as Probes of First-Star Nucleosynthesis, the IMF, and Galactic Assembly, Geneva, Switzerland
• Sep 09-13 - Workshop: Quantum Materials for Dark Matter Detection, Stockholm, Sweden
• Sep 09-13 - Workshop: A Synoptic View of the Magellanic Clouds - VMC, Gaia and Beyond, Garching, Germany
• Sep 09-13 - International Conference on Electromagnetics in Advanced Applications (ICEAA 2019), Granada, Spain
• Sep 09-13 - KIAA Forum on Gas in Galaxies: Multiple-phase Interstellar Medium - Probing the Activities and Power Engines from Local to Distant Universe, Beijing, China
• Sep 09-13 -[Apr 03] 14th Heidelberg Summer School: Instrumentation for Ground-based Optical & Infrared Astronomy, Heidelberg, Germany
• Sep 10 - Comet 260P/McNaught Perihelion (1.417 AU)
• Sep 10 - Comet C/2019 D1 (Flewelling) Closest Approach To Earth (1.521 AU)
• Sep 10 - Comet C/2018 KJ3 (Lemmon) Perihelion (3.627 AU)
• Sep 10 - Comet C/2017 U7 Perihelion (6.418 AU)
• Sep 10 - Aten Asteroid 367943 Duende Closest Approach To Earth (0.190 AU)
• Sep 10 - Asteroid 3948 Bohr Closest Approach To Earth (0.892 AU)
• Sep 10 - Asteroid 4099 Wiggins Closest Approach To Earth (1.565 AU)
• Sep 10 - Asteroid 1213 Algeria Closest Approach To Earth (1.824 AU)
• Sep 10 - Kuiper Belt Object 2010 RF43 At Opposition (52.928 AU)
• Sep 10-13 - 34th International Association of Sedimentologists Meeting, Rome, Italy
• Sep 11 - Comet 105P/Singer Brewster At Opposition (2.313 AU)
• Sep 11 - Asteroid 3780 Maury Closest Approach To Earth (1.700 AU)
• Sep 11 - Jupiter Trojan 624 Hektor At Opposition (4.376 AU)
• Sep 11 - 45th Anniversary (1974), Charles Kowal's Discovery Of Jupiter Moon Leda
• Sep 11-14 - Conference: Scalars 2019, Warsaw, Poland
• Sep 12 - Comet 101P-B/Chernykh At Opposition (1.637 AU)
• Sep 12 - Asteroid 9249 Yen Closest Approach To Earth (1.259 AU)
• Sep 12 - Asteroid 9995 Alouette Closest Approach To Earth (1.618 AU)
• Sep 12 - Asteroid 4808 Ballaero Closest Approach To Earth (1.653 AU)
• Sep 12 - Asteroid 70715 Allancheuvront Closest Approach To Earth (1.638 AU)
• Sep 12 - 60th Anniversary (1959), Luna 2 Launch (USSR Moon Impact Mission)
• Sep 12-13 - 11th Summit on Earth Observation Business, Paris, France
• Sep 12-13 - Workshop: Supergravity 2019, Padova, Italy
• Sep 13 - Mercury Passes 0.3 Degrees From Venus
• Sep 13 - Apollo Asteroid 2013 CV83 Near-Earth Flyby (0.040 AU)
• Sep 13 - Asteroid 19155 Lifeson Closest Approach To Earth (1.066 AU)
• Sep 14 - Amor Asteroid 467317 (2000 QW7) Near-Earth Flyby (0.036 AU)
• Sep 14 - Apollo Asteroid 504800 (2010 CO1) Near-Earth Flyby (0.036 AU)
• Sep 14 - Asteroid 11335 Santiago Closest Approach To Earth (1.660 AU)
• Sep 14 - Robert Dietz's 105th Birthday (1914)
• Sep 14 - Hendrik van Gent's 120th Birthday (1899)
• Sep 15 - Moon Occults Asteroid 21 Lutetia
• Sep 15 - Comet P/2010 U2 (Hill) Perihelion (2.568 AU)
• Sep 15 - Comet C/2017 M5 (TOTAS) At Opposition (5.839 AU)
• Sep 15 - Asteroid 42998 Malinafrank Closest Approach To Earth (1.872 AU)
• Sep 15 - Asteroid 1268 Libya Closest Approach To Earth (3.142 AU)
• Sep 15 - Murray Gell-Mann's 90th Birthday (1929)
• Sep 15-19 - Conference: Habitability - Producing Conditions Conducive to Life, Big Sky, Montana
• Sep 15-20 - Conference: Nuclear Physics in Astrophysics IX, Frankfurt, Germany
• Sep 15-20 - Conference: The 3C Radio Sky: Legacy of the Third Cambridge Catalogue, Turin, Italy
• Sep 15-20 - European Planetary Science Congress (EPSC)/Division for Planetary Sciences (DPS) Joint Meeting 2019, Geneva, Switzerland
• Sep 15-21 - Conference: Compact White Dwarf Binaries - From SN Ia Progenitors to Gravitational Wave Sources, Yerevan, Armenia
• Sep 16 - International Day for the Preservation of the Ozone Layer
• Sep 16 - Apollo Asteroid 2018 FU1 Near-Earth Flyby (0.047 AU)
• Sep 16 - Asteroid 337044 Bobdylan Closest Approach To Earth (1.547 AU)
• Sep 16 - Apollo Asteroid 25143 Itokawa Closest Approach To Earth (1.333 AU)
• Sep 16 - Andrea Boattini's 50th Birthday (1969)
• Sep 16 - 50th Anniversary (1969), Suchy Dul Meteorite Fall (Hit House in Czechoslovakia)
• Sep 16 - Francesco Maurolico's 525th Birthday (1494)
• Sep 16-18 - IAU Astronomy Education Conference: Bridging Research & Practice, Garching, Germany
• Sep 16-19 - Workshop: The Extragalactic Explosive Universe - The New Era of Transient Surveys and Data-Driven Discovery, Garching, Germany
• Sep 16-20 - Conference: Extremely Big Eyes on the Early Universe, Rome, Italy
• Sep 16-20 - 1st Conference on Machine Learning in Heliophysics, Amsterdam, The Netherlands
• Sep 16-20 - International Conference Physics of Stars and Planets: Atmospheres, Activity, Magnetic Fields, Shamakhy, Azerbaijan
• Sep 16-20 - Conference: The 3C Extragalactic Radio Sky - Legacy of the Third Cambridge Catalogue, Torino, Italy
• Sep 16-20 - Conference: From Gas to Stars - The Links between Massive Star and Star Cluster Formation, York, United Kingdom
• Sep 16-20 - ION GNSS+ 2019 Conference, Miami, Florida
• Sep 16-20 - Kavli Institute for Cosmology (KICC) 10th Anniversary Symposium: Cosmology - The End of the Geginning. Future Prospects in Cosmology, Large Scale Structure and Galaxy Formation, Cambridge, United Kingdom
• Sep 16-20 -[Apr 07] 39th International Symposium on Physics in Collision (PIC 2019), Tapei, Taiwan
• Sep 16-20 - European Conference on Radiation and its Effects on Components and Systems (RADECS 2019), Montpellier, France
• Sep 16-20 - Summer School: COPERNICUS Sentinels - Remote Sensing Techniques in Forestry, Podenzano, Italy
• Sep 16-21 - 13th International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials 2019), Rome, Italy
• Sep 16-24 - International School of Nuclear Physics: Star Mergers, Gravitational Waves, Dark Matter and Neutrinos in Nuclear, Particle and Astro-Physics, and in Cosmology, Erice, Sicily, Italy
• Sep 17 - Comet 101P/Chernykh At Opposition (1.573 AU)
• Sep 17 - Comet 233P/La Sagra Closest Approach To Earth (2.176 AU)
• Sep 17 - Comet 125P/Spacewatch Closest Approach To Earth (2.386 AU)
• Sep 17 - 230th Anniversary (1789), William Herschel's Discovery of Saturn Moon Mimas
• Sep 17 - John Goodricke's 255th Birthday (1764)
• Sep 17-20 - The Physical Society of Japan 2019 Autumn Meeting: Elementary Particle Physics, Nuclear Physics, and Cosmic Rays/Astrophysics, Yamagata, Japan
• Sep 17-21 - Conference: The Modern Physics of Compact Stars and Relativistic Gravity 2019 (MPCS2019), Yerevan, Armenia
• Sep 18 - Comet P/2013 W1 (PANSTARRS) At Opposition (2.421 AU)
• Sep 18 - Comet 332P-F/Ikeya-Murakami At Opposition (3.510 AU)
• Sep 18 - Asteroid 26732 Damianpeach Closest Approach To Earth (1.082 AU)
• Sep 18 - Asteroid 6312 Robheinlein Closest Approach To Earth (1.163 AU)
• Sep 18 - Asteroid 443 Photographica Closest Approach To Earth (1.299 AU)
• Sep 18 - Asteroid 8925 Boattini Closest Approach To Earth (1.343 AU)
• Sep 18 - 30th Anniversary (1989), Rich Terrile's Discovery of Neptune Moons Thalassa & Naiad
• Sep 18 - 60th Anniversary (1959), Vanguard 3 Launch
• Sep 18 - Leon Foucault's 200th Birthday (1819)
• Sep 18-22 - 10th Congress of Balkan Geophysical Society, Albena, Bulgaria
• Sep 19 - Comet 26P/Grigg-Skjellerup At Opposition (2.460 AU)
• Sep 19 - Comet 129P/Shoemaker-Levy At Opposition (3.526 AU)
• Sep 19 - Asteroid 6827 Wombat Closest Approach To Earth (1.516 AU)
• Sep 19 - Asteroid 42981 Jenniskens Closest Approach To Earth (1.718 AU)
• Sep 19 - Lecture: It Broke! Stories of How we Fixed It, Pasadena, California
• Sep 19 - Hans-Emil Schuster's 85th Birthday (1934)
• Sep 19 - Robert Leighton's 100th Birthday (1919)
• Sep 19 - Simon Plossl's 225th Birthday (1794)
• Sep 19 - Jean Baptiste Joseph Delambre's 270th Birthday (1749)
• Sep 19-21 - 7th Annual Giant Magellan Telescope (GMT) Community Science Meeting: The Cosmic Baryon Cycle 0 Impact on Galaxy Evolution, Carlsbad, California
• Sep 19-24 - Conference: Mapping Central Regions of Active Galactic Nuclei, Guilin, China
• Sep 20 - Aten Asteroid 297418 (2000 SP43) Near-Earth Flyby (0.68 AU)
• Sep 20 - Aten Asteroid 2015 SD Near-Earth Flyby (0.081 AU)
• Sep 20 - Lecture: It Broke! Stories of How we Fixed It, Pasadena, California
• Sep 20 - Eustachio Manfredi's 345th Birthday (1674)
• Sep 21 - Comet P/2009 WX51 (Catalina) At Opposition (3.058 AU)
• Sep 21 - Comet 81P/Wild At Opposition (3.832 AU)
• Sep 21 - Apollo Asteroid 2017 SL16 Near-Earth Flyby (0.020 AU)
• Sep 21 - Asteroid 5441 Andymurray Closest Approach To Earth (2.055 AU)
• Sep 21 - 5th Anniversary (2014), MAVEN, Mars Orbit Insertion
• Sep 21 - 45th Anniversary (1974), Mariner 10, 2nd Mercury Flyby
• Sep 21 - 70th Anniversary (1949), Beddgelert Meteorite Fall (Hit Hotel in Wales)
• Sep 21 - Gustav Holst's 145th Birthday (1874)
• Sep 22 - Comet 2P/Encke At Opposition (2.255 AU)
• Sep 22 - Comet 332P/Ikeya-Murakami At Opposition (3.279 AU)
• Sep 22 - Comet 332P-I/Ikeya-Murakami At Opposition (3.287 AU)
• Sep 22 - Comet 332P-D/Ikeya-Murakami At Opposition (3.288 AU)
• Sep 22 - Comet 332P-C/Ikeya-Murakami At Opposition (3.294 AU)
• Sep 22 - Comet 332P-H/Ikeya-Murakami At Opposition (3.295 AU)
• Sep 22 - Comet 332P-A/Ikeya-Murakami At Opposition (3.296 AU)
• Sep 22 - Comet 332P-C/Ikeya-Murakami At Opposition (3.299 AU)
• Sep 22 - Aten Asteroid 2100 Ra-Shalom Closest Approach To Earth (0.180 AU)
• Sep 22 - Apollo Asteroid 6063 Jason Closest Approach To Earth (2.266 AU)
• Sep 22 - Apollo Asteroid 306367 Nut Closest Approach To Earth (2.439 AU)
• Sep 22 - Saul Perlmutter's 60th Birthday (1959)
• Sep 22-25 - 2019 Geological Society of America (GSA) Annual Meeting, Phoenix, Arizona
• Sep 22-25 - Conference: The Time Machine Factory [unspeakable, speakable] on Time Travel 2019, Torino, Italy
• Sep 22-28 - 15th Rencontres du Vietnam: Perspectives in Hadron Physics, Quy Nhon, Vietnam
• Sep 23 - Autumnal Equinox, 07:50 UT
• Sep 23 - Comet P/2000 S4 (LINEAR-Spacewatch) Perihelion (2.265 AU)
• Sep 23 - Aten Asteroid 2007 TQ24 Near-Earth Flyby (0.062 AU)
• Sep 23 - Asteroid 21 Lutetia Closest Approach To Earth (1.083 AU)
• Sep 23 - Asteroid 4047 Chang'E Closest Approach To Earth (1.103 AU)
• Sep 23 - Asteroid 3018 Godiva Closest Approach To Earth (1.120 AU)
• Sep 23 - Apollo Asteroid 5731 Zeus Closest Approach To Earth (1.410 AU)
• Sep 23 - Asteroid 6336 Dodo Closest Approach To Earth (1.253 AU)
• Sep 23 - Asteroid 4221 Picasso Closest Approach To Earth (1.834 AU)
• Sep 23 - Jupiter Trojan 1437 Diomedes At Opposition (4.205 AU)
• Sep 23 - Hugo von Seeliger's 170th Birthday (1849)
• Sep 23 - Hippolyte Fizeau's 200th Birthday (1819)
• Sep 23-25 - Workshop: Titan after Cassini-Huygens, Madrid, Spain
• Sep 23-25 - Terrestrial Ecology Science Team Meeting, College Park, Maryland
• Sep 23-26 - 16th Potsdam Thinkshop: The Rotation Periods of Cool Stars - Measurements, Uses, Connections and Prospects, Potsdam, Germany
• Sep 23-26 - IEEE Radio and Antenna Days of the Indian Ocean (RADIO), Reunion Island
• Sep 23-26 - 6th Conference of the of the Polish Society on Relativity, Szczecin, Poland
• Sep 23-26 -[Apr 08] 1st Mediterranean Conference on Higgs Physics (MCHP 2019), Tangier, Morocco
• Sep 23-27 - Crete III Conference: Through Dark Lanes to New Stars Celebrating the Career of Prof. Charles Lada, Crete, Greece
• Sep 23-27 - Workshop: The Functioning of Galaxies - Challenges for Newtonian and Milgromian Dynamics, Bonn, Germany
• Sep 23-27 - Workshop: Challenges in Theoretical High-Energy Physics, Stockholm, Sweden
• Sep 23-27 - Workshop: New Physics at the Low Energy Scales, Seoul, Korea
• Sep 23-Oct 01 -[Apr 08] GeoPlaNet Analogue Field School: Fluid-Rock Interactions in the Solar System, Pyrenees, France/Spain
• Sep 24 - Comet C/2019 B1 (Africano) Closest Approach To Earth (2.580 AU)
• Sep 24 - Apollo Asteroid 1998 FF14 Near-Earth Flyby (0.028 AU)
• Sep 24 - Asteroid 6123 Aristoteles Closest Approach To Earth (1.182 AU)
• Sep 24 - Asteroid 4017 Disneya Closest Approach To Earth (1.338 AU)
• Sep 24 - Asteroid 4372 Quincy Closest Approach To Earth (1.609 AU)
• Sep 24 - Asteroid 274860 Emilylakdawalla Closest Approach To Earth (2.096 AU)
• Sep 24-26 - 8th International Symposium on Andean Geodynamics, Quito, Ecuador
• Sep 24-27 - Conference: The Legacy of the Gaia-ESO Survey (GES 2019), Florence, Italy
• Sep 24-27 - 8th ESA International Workshop on Tracking, Telemetry and Command Systems for Space Applications (TTC2019), Darmstadt, Germany
• Sep 24-27 - 11th International Symposium on Digital Earth (ISDE 11), Florence, Italy
• Sep 24-29 - Northern Prairie Star Party, Black Nugget Lake, Canada
• Sep 24-Oct 25 -[Apr 08] YITP Long-Term Workshop: Multi-Messenger Astrophysics in the Gravitational Wave Era, Kyoto, Japan
• Sep 25 - Soyuz MS-15 Soyuz FG Launch (International Space Station 61S)
• Sep 25 - Comet P/2009 SK280 (Spacewatch-Hill) Closest Approach To Earth (3.225 AU)
• Sep 25 - Comet 332P-G/Ikeya-Murakami At Opposition (3.241 AU)
• Sep 25 - Asteroid 9533 Aleksejleonov Closest Approach To Earth (1.296 AU)
• Sep 25 - Asteroid 2315 Czechoslovakia Closest Approach To Earth (1.770 AU)
• Sep 25 - Asteroid 79896 Billhaley Closest Approach To Earth (1.968 AU)
• Sep 25 - Kuiper Belt Object 2010 RE64 At Opposition (50.510 AU)
• Sep 25 - 10th Anniversary (2009), Grimsby Meteorite Fall (Hit Car in Canada)
• Sep 25 - Ole Romer's 375th Birthday (1644)
• Sep 25-27 - Workshop: Navigating the Swampland, Madrid, Spain
• Sep 25-27 - Conference: Perspectives in Astroparticle Physics from High Energy Neutrinos (PAHEN 2019), Berlin, Germany
• Sep 26 - Comet P/2014 U2 (Kowalski) Closest Approch To Earth (0.280 AU)
• Sep 26 - Comet 101P-B/Chernykh Closest Approach To Earth (1.613 AU)
• Sep 26 - Comet P/2009 SK280 (Spacewatch-Hill) At Opposition (3.225 AU)
• Sep 26 - Aten Asteroid 2017 KP27 Near-Earth Flyby (0.016 AU)
• Sep 26 - Asteroid 4535 Adamcarolla Closest Approach To Earth (2.044 AU)
• Sep 26 - Asteroid 5249 Giza Closest Approach To Earth (2.623 AU)
• Sep 26 - 20th Anniversary (1999), Kobe Meteorite Fall (Hit House in Japan)
• Sep 26 - Christopher Hansteen's 235th Birthday (1784)
• Sep 26-27 - Meeting of the Astronomy and Astrophysics Advisory Committee (AAAC), Alexandria, Virginia
• Sep 26-28 - 2th International Conference & Exhibition: Advanced Geospatial Science & Technology (TeanGeo 2018), Tunis, Tunisia
• Sep 27 - Comet C/2018 W2 (Africano) Closest Approach To Earth (0.494 AU)
• Sep 27 - Comet 95P/Chiron At Opposition (17.809 AU)
• Sep 27 - Asteroid 5905 Johnson Closest Approach To Earth (0.940 AU)
• Sep 27 - Asteroid 24102 Jacquecassini Closest Approach To Earth (1.267 AU)
• Sep 27 - Asteroid 17656 Hayabusa Closest Approach To Earth (1.661 AU)
• Sep 27 - Kuiper Belt Object 120347 Salacia At Opposition (43.975 AU)
• Sep 27 - Henry Holt's 90th Birthday (1929)
• Sep 27 - Benjamin Gould's 195th Birthday (1824)
• Sep 27 - Daniel Kirkwood's 205th Birthday (1814)
• Sep 27-28 - Kouchibouguac Fall Star Fest, Kouchibouguac National Park, Canada
• Sep 27-29 - 33rd Annual Alberta Star Party, near Red Deer, Canada
• Sep 27-29 - Fall'N'Stars 2019 Star Party, Thomasburg, Canada
• Sep 28 - Amor Asteroid 354030 (2001 RB18) Near-Earth Flyby (0.093 AU)
• Sep 28 - Asteroid 391257 Wilwheaton Closest Approach To Earth (1.210 AU)
• Sep 28 - Asteroid 2712 Keaton Closest Approach To Earth (1.220 AU)
• Sep 28 - Asteroid 2829 Bobhope Closest Approach To Earth (1.818 AU)
• Sep 28 - Binary Apollo Asteroid 2017 YE5 Closest Approach To Earth (3.229 AU)
• Sep 28 - 50th Anniversay (1969), Murchison Meteorite Shower (Hit Barn in Australia)
• Sep 29 - Comet C/2018 W2 (Africano) At Opposition (0.497 AU)
• Sep 29 - Comet 112P/Urata-Niijima Closest Approach To Earth (1.238 AU)
• Sep 29 - Comet 101P/Chernykh Closest Approach To Earth (1.553 AU)
• Sep 29 - Comet P/2005 GF8 (LONEOS) Perihelion (2.831 AU)
• Sep 29 - Asteroid 2118 Flagstaff Closest Approach To Earth (1.280 AU)
• Sep 29 - Asteroid 2511 Patterson Closest Approach To Earth (1.307 AU)
• Sep 29 - Asteroid 30444 Shemp Closest Approach To Earth (1.351 AU)
• Sep 29 - Asteroid 10189 Normanrockwell Closest Approach To Earth (1.444 AU)
• Sep 29 - Asteroid 16035 Sasandford Closest Approach To Earth (1.724 AU)
• Sep 29 - Asteroid 7367 Giotto Closest Approach To Earth (2.587 AU)
• Sep 29 - 10th Anniversary (2009), MESSENGER, 3rd Mercury Flyby
• Sep 29 - 15th Anniversary (2004), SpaceShipOne Launch F-2 (2nd Private Manned Space Flight)
• Sep 29 - Geoffrey Marcy's 65th Birthday (1954)
• Sep 29 - Michael Belton's 85th Birthday (1934)
• Sep 29 - 135th Anniversary (1884), Johann Palisa's Discovery of Asteroid 243 Ida
• Sep 30 - Comet 111P/Helin-Roman-Crockett At Opposition (3.063 AU)
• Sep 30 - Comet 349P/Lemmon At Opposition (3.195 AU)
• Sep 30 - 10th Anniversary (2009), 1st Clown is Launched into Space (Guy Lalibere)
• Sep 30 - 25th Anniversary (1994), STS-68 Launch (Space Shuttle Endeavour, Radar Imaging)
• Sep 30 - Phil Plait's 55th Birthday (1964)
• Sep 30 - 90th Anniversary (1929), Rocket-Powered Manned Flight by Fritz von Opel
• Sep 30-Oct 02 -[Apr 09] MOCa 2019 Workshop: Materia Oscura en Colombia, Bogota, Colombia
• Sep 30-Oct 03 - Conference: Large Meteorite Impacts and Planetary Evolution VI, Brasilia, Brazil
• Sep 30-Oct 03 - International Conference on Flight Vehicles, Aerothermodynamics and Re-entry Missions and Engineering (FAR), Monopoli, Italy
• Sep 30-Oct 04 - Conference: Diversity of the Local Universe, Nizhnij Arkhyz, Russia
• Sep 30-Oct 04 - European Space Power Conference 2019, Juan-les-Pins, France
• Sep 30-Oct 04 - 9th International Symposium on Nuclear Symmetry Energy (NuSYM2019), Danang City, Vietnam

October 2019

• Oct ?? - GEO-KOMPSAT-2B Ariane 5 Launch
• Oct ?? - STPSat-6 Atlas 5 Launch
• Oct ?? -[Apr 07] RISAT-2BR2 PSLV Launch
• Oct 01 - Comet 175P/Hergenrother Perihelion (1.946 AU)
• Oct 01 - Apollo Asteroid 2018 FK5 Near-Earth Flyby (0.034 AU)
• Oct 01 - Christian Veillet's 65th Birthday (1954)
• Oct 01 - George Robert Carruthers' 80th Birthday (1939)
• Oct 01 - Herve Faye's 205th Birthday (1814)
• Oct 01-03 - L5 Consortium Meeting, Palo Alto, California
• Oct 01-04 - Software Product Assurance and Engineering Workshop, Toulouse, France
• Oct 02 - Comet 293P/Spacewatch At Opposition (2.575 AU)
• Oct 02 - Comet 111P/Helin-Roman-Crockett Closest Appproach To Earth (3.063 AU)
• Oct 02 - Comet 172P/Yeung At Opposition (3.606 AU)
• Oct 02 - Aten Asteroid 2018 LG4 Near-Earth Flyby (0.035 AU)
• Oct 02 - Apollo Asteroid 2017 EY2 Near-Earth Flyby (0.098 AU)
• Oct 02 - Asteroid 2045 Peking Closest Approach To Earth (1.504 AU)
• Oct 02 - Plutino 469372 (2001 QF298) At Opposition (42.525 AU)
• Oct 02 - Jack Parsons' 105th Birthday (1914)
• Oct 02-05 -[Apr 08] Venera-D Joint Science Definition Team Workshop: Potential Landing Sites and Cloud Layer Habitability, Moscow, Russia
• Oct 03 - Comet 125P/Spacewatch At Opposition (2.423 AU)
• Oct 03 - Comet C/2018 P5 (PANSTARRS) Closest Approach To Earth (3.793 AU)
• Oct 03 - Atira Asteroid 434326 (2004 JG6) Closest Approach To Earth (0.700 AU)
• Oct 03 - Asteroid 4330 Vivaldi Closest Approach To Earth (1.176 AU)
• Oct 03 - Asteroid 5102 Benfranklin Closest Approach To Earth (1.269 AU)
• Oct 03 - Asteroid 1951 Lick Closest Approach To Earth (2.111 AU)
• Oct 03 - Kuiper Belt Object 308933 (2006 SQ372) At Opposition (28.128 AU)
• Oct 03 - Kuiper Belt Object 2015 RR245 At Opposition (61.512 AU)
• Oct 03 - Hermann Struve's 165th Birthday (1854)
• Oct 03-06 - 38th International Meteor Conference (IMC 2019), Bollmannsruh, Germany,
• Oct 04 - Comet 260P/McNaught Closest Approach To Earth (0.562 AU)
• Oct 04 - Comet 133P/Elst-Pizarro Closest Approach To Earth (2.039 AU)
• Oct 04 - Comet P/2016 BA14 (PANSTARRS) At Opposition (3.584 AU)
• Oct 04 - Apollo Asteroid 2016 HA Near-Earth Flyby (0.098 AU)
• Oct 04 - Apollo Asteroid 29075 (1950 DA) Closest Approach To Earth (1.401 AU)
• Oct 04 - 15th Anniversary (2004), SpaceShipOne Launch F-3 (3rd Private Manned Space Flight)
• Oct 04 - 60th Anniversary (1959), Luna 3 Launch (USSR Moon Flyby Mission)
• Oct 04 - 60th Anniversary (1959), Little Joe 6 Launch
• Oct 04 - Ed Beshore's 65th Birthday (1954)
• Oct 04-10 - World Space Week
• Oct 05 - International Observe The Moon Night
• Oct 05 - Moon Occults Saturn
• Oct 05 - Comet P/2013 W1 (PANSTARRS) Closest Approach To Earth (2.376 AU)
• Oct 05 - Comet 252P/LINEAR At Opposition (3.680 AU)
• Oct 05 - Aten Asteroid 2017 TJ4 Near-Earth Flyby (0.034 AU)
• Oct 05 - Amor Asteroid 8013 Gordonmoore Closest Approach To Earth (2.048 AU)
• Oct 05 - Asteroid 3688 Navajo Closest Approach To Earth (3.316 AU)
• Oct 05 - Lecture: Illuminating Dark Matter, Mt. Tamalpais State Park, California
• Oct 05 - Griffith Observatory Public Star Party, Los Angeles
• Oct 05 - 35th Anniversary (1984), STS-41-G Launch (Space Shuttle Challenger, SIR-B Satellite)
• Oct 05 - Richard Gordon's 90th Birthday (1929)
• Oct 05-08 - Conference: Cosmic Controversies, Chicago, Illinois
• Oct 06 - Moon Occults Dwarf Planet Pluto
• Oct 06 - Apollo Asteroid 3200 Phaethon Closest Approach To Earth (0.918 AU)
• Oct 06 - Asteroid 400796 Douglass Closest Approach To Earth (1.286 AU)
• Oct 06-10 - 29th Annual Conference on Astronomical Data Analysis and Software Systems: ADASS in the Netherlands, Groningen, The Netherlands
• Oct 06-11 - ISRSE-38/Pecora-21 Conference: Continuous Monitoring of Our Changing Planet - From Sensors to Decisions, Baltimore, Maryland
• Oct 06-11 - School of Statistics for Astrophysics 2019, Autrans, France
• Oct 07 - Comet P/2006 R1 (Siding Spring) At Opposition (0.894 AU)
• Oct 07 - Comet 2P/Encke At Opposition (2.215 AU)
• Oct 07 - Apollo Asteroid 2016 CW193 Near-Earth Flyby (0.081 AU)
• Oct 07 - Aten Asteroid 2014 AE29 Near-Earth Flyby (0.099 AU)
• Oct 07 - Asteroid 827 Wolfiana Closest Approach To Earth (0.922 AU)
• Oct 07 - Asteroid 6117 Brevardastro Closest Approach To Earth (1.309 AU)
• Oct 07 - Asteroid 8250 Cornell Closest Approach To Earth (1.776 AU)
• Oct 07 - Amor Asteroid 20460 Robwhiteley Closest Approach To Earth (2.008 AU)
• Oct 07-08 - World Congress on Earth & Environmental Science, Madrid, Spain
• Oct 07-09 - 4th Uppsala Workshop on Particle Physics with Neutrino Telescopes (PPNT19), Uppsala, Sweden
• Oct 07-10 - Conference: Satellite Innovation, Silicon Valley, California
• Oct 07-11 - IAU Symposium 356: Nuclear Activity in Galaxies Across Cosmic Time, Addis Ababa, Ethiopia
• Oct 07-11 - Conference: Black Holes and Neutron Stars with Gravitational Waves, Tokyo, Japan
• Oct 07-11 - Cosmic Ray Anisotropy Workshop (CRA2019), L'Aquila, Italy
• Oct 07-11 - European Radio Interferometry School (ERIS 2019), Gothenburg, Sweden
• Oct 07-18 - 7th VLA Data Reduction Workshop, Socorro, New Mexico
• Oct 08 - Mars Summer Solstice
• Oct 08 - Comet 29P/Schwassmann-Wachmann Closest Approach To Earth (4.789 AU)
• Oct 08 - Apollo Asteroid 469219 (2016 HO3) Closest Approach To Earth (0.151 AU)
• Oct 08 - Asteroid 5891 Gehrig Closest Approach To Earth (1.175 AU)
• Oct 08 - Asteroid 9500 Camelot Closest Approach To Earth (1.493 AU)
• Oct 08 - Neptune Trojan 2015 RW277 At Opposition (29.965 AU)
• Oct 08-11 - Workshop on NeQuick Ionospheric Electron Density Model: Latest Developments and New Implementations, Trieste, Italy
• Oct 09 - Draconids Meteor Shower Peaks
• Oct 09 - Comet P/2005 J1 (McNaught) At Opposition (2.606 AU)
• Oct 09 - Comet 29P/Schwassmann-Wachmann At Opposition (4.789 AU)
• Oct 09 - Asteroid 1022 Olympiada Closest Approach To Earth (2.256 AU)
• Oct 09 - Kuiper Belt Object 2008 ST291 At Opposition (60.466 AU)
• Oct 09 - 10th Anniversary (2009), LCROSS Impacts Moon
• Oct 09 - 415th Anniversary (1604), Discovery of Supernova 1604 (Kepler's Nova)
• Oct 10 - Comet P/2008 Y12 (SOHO) Perihelion (0.066 AU)
• Oct 10 - Comet P/2006 R1 (Siding Spring) Closest Approach To Earth (0.888 AU)
• Oct 10 - Comet P/2018 L1 (PANSTARRS) Closest Approach To Earth (2.207 AU)
• Oct 10 - Comet P/2013 A2 (Scotti) At Opposition (2.907 AU)
• Oct 10 - Comet C/2018 P5 (PANSTARRS) At Opposition (3.801 AU)
• Oct 10 - Asteroid 90388 Philchristensen Closest Approach To Earth (1.229 AU)
• Oct 10 - Asteroid 25137 Seansolomon Closest Approach To Earth (1.241 AU)
• Oct 10 - Asteroid 5535 Annefrank Closest Approach To Earth (1.269 AU)
• Oct 10 - Asteroid 9949 Brontosaurus Closest Approach To Earth (1.499 AU)
• Oct 10 - BIPM Workshop on Advanced Time and Frequency Transfer (ATFT) - The Ultimate Frontier for Remote Comparison Methods, Sevres, France
• Oct 10 - Asteroid 5362 Johnyoung Closest Approach To Earth (2.316 AU)
• Oct 10-11 - 2nd Workshop on Numerical Modeling in MHD and Plasma Physics: Methods, Tools, and Outcomes, Moscow, Russia
• Oct 11 - Comet P/2014 U2 (Kowalski) Perihelion (1.116 AU)
• Oct 11 - Comet 133P/Elst-Pizarro At Opposition (2.046 AU)
• Oct 11 - Comet P/2017 P1 (PANSTARRS) Closest Approach To Earth (4.784 AU)
• Oct 11 - Amor Asteroid 477719 (2010 SG15) Near-Earth Flyby (0.092 AU)
• Oct 11 - Asteroid 2625 Jack London Closest Approach To Earth (1.131 AU)
• Oct 11 - Asteroid 5231 Verne Closest Approach To Earth (1.340 AU)
• Oct 11 - Asteroid 6442 Salzburg Closest Approach To Earth (1.715 AU)
• Oct 11 - Asteroid 12002 Suess Closest Approach To Earth (1.855 AU)
• Oct 11 - 25th Anniversary (1994), Magellan Burnup in Venus' Atmosphere
• Oct 12 - Moon Occults Asteroid 21 Lutetia
• Oct 12 - Comet C/2018 Y1 (Iwamoto) Closest Approach To Earth (2.671 AU)
• Oct 12 - Amor Asteroid 2059 Baboquivari Closest Approach To Earth (0.474 AU)
• Oct 12 - Asteroid 8277 Machu-Picchu Closest Approach To Earth (1.604 AU)
• Oct 12 - 40th Anniversary (1979), "The Hitchhiker's Guide to the Galaxy" Book 1st Published
• Oct 12 - 55th Anniversary (1964), Voskhod 1 Launch
• Oct 13 - Comet P/2012 O2 (McNaught) At Opposition (1.386 AU)
• Oct 13 - Comet 41P/Tuttle-Giacobini-Kresak At Opposition (4.116 AU)
• Oct 13 - Asteroid 16 Psyche Occults TYC 6335-00807-1 (11.1 Magnitude Star)
• Oct 13 - Asteroid 17059 Elvis Closest Approach To Earth (1.225 AU)
• Oct 13 - Asteroid 5816 Potsdam Closest Approach To Earth (1.836 AU)
• Oct 13 - 10th Anniversary (2009), Mars Rover Opportunity Discovery of Mackinac Island Meteorite on Mars
• Oct 13 - 60th Anniversary (1959), Explorer 7 Launch
• Oct 13 - 60th Anniversary (1959), Hamlet Meteorite Fall (Hit House in Indiana)
• Oct 13-18 - The RR Lyrae and Cepheid Conference 2019: Frontiers of Classical Pulsators - Theory and Observations, Cloudcroft, New Mexico
• Oct 13-18 - Chapman Conference: Winter Limnology in a Changing World, Polson, Montana
• Oct 13-18 - Workshop: Physics-Dynamics Coupling in Earth System Models, Banff, Canada
• Oct 13-19 - Conference: Perturbations of Earth Surface Dynamics Caused by Extreme Events, Kathmandu, Nepal
• Oct 14 - Comet 293P/Spacewatch Closest Approach To Earth (2.555 AU)
• Oct 14 - Atira Asteroid 2015 DR215 Closest Approach To Earth (0.637 AU)
• Oct 14 - Asteroid 128523 Johnmuir Closest Approach To Earth (0.923 AU)
• Oct 14 - Amor Asteroid 154991 Vinciguerra Closest Approach To Earth (1.061 AU)
• Oct 14 - Asteroid 2709 Sagan Closest Approach To Earth (1.348 AU)
• Oct 14 - Asteroid 3866 Langley Closest Approach To Earth (1.655 AU)
• Oct 14 - Amor Asteroid 3352 McAuliffe Closest Approach To Earth (1.918 AU)
• Oct 14 - Asteroid 7231 Porco Closest Approach To Earth (1.990 AU)
• Oct 14 - Kuiper Belt Object 303775 (2005 QU182) At Opposition (52.381 AU)
• Oct 14-17 - SKA VLBI Key Science Projects and Operations Workshop, Jodrell Bank, United Kingdom
• Oct 14-18 - Conference: The Milky Way 2019 - LAMOST and Other Leading Surveys, Hubei, China
• Oct 14-18 - ALMA2019 Workshop: Science Results and Cross-Facility Synergies, Sardinia, Italy
• Oct 14-18 - Workshop: Historical Supernovae, Novae and Other Transient Events, Leiden, The Netherlands
• Oct 14-20 - 11th High-Energy Physics International Conference in Madagascar (HEPMAD 19), Antananarivo, Madagascar
• Oct 15 - COSMO-SkyMed (CSG-1)/ CHEOPS/ OPS-SAT Soyuz-ST-B Fregat-MT Launch
• Oct 15 - Comet P/2000 R2 (LINEAR) Closest Approach To Earth (1.099 AU)
• Oct 15 - Aten Asteroid 2018 PK21 Near-Earth Flyby (0.061 AU)
• Oct 15 - Atira Asteroid 2014 FO47 Closest Approach To Earth (0.437 AU)
• Oct 15 - Atira Asteroid 1998 DK36 Closest Approach To Earth (0.541 AU)
• Oct 15 - Asteroid 4433 Goldstone Closest Approach To Earth (1.240 AU)
• Oct 15 - Asteroid 4104 Alu Closest Approach To Earth (1.530 AU)
• Oct 15 - Asteroid 1069 Planckia Closest Approach To Earth (2.454 AU)
• Oct 15 - Kuiper Belt Object 19308 (1996 TO66) At Opposition (46.513 AU)
• Oct 15 - 65th Anniversary (1954), Flash Gordon Airs on TV
• Oct 15 - Tom Bopp's 70th Birthday (1949)
• Oct 15 - 90th Anniversary (1929), Beardsley Meteorite Shower in Kansas
• Oct 15 - Jesse Greenstein's 110th Birthday (1909)
• Oct 15 - Archibald Hoxsey's 135th Birthday (1884)
• Oct 15 - Asaph Hall's 190th Birthday (1829)
• Oct 16 - Comet 200P/Larsen Closest Approach To Earth (2.338 AU)
• Oct 16 - Asteroid 1875 Neruda Occults HIP 115476 (5.7 Magnitude Star)
• Oct 16 - Asteroid 2874 Jim Young Closest Approach To Earth (0.967 AU)
• Oct 16 - Apollo Asteroid 4183 Cuno Closest Approach To Earth (1.900 AU)
• Oct 16-17 - 4th International Conference On Atomic and Molecular Physics, Singapore
• Oct 17 - Asteroid 16682 Donati Closest Approach To Earth (1.205 AU)
• Oct 17 - Asteroid 14593 Everett Closest Approach To Earth (1.219 AU)
• Oct 17 - Asteroid 6714 Montreal Closest Approach To Earth (1.323 AU)
• Oct 17 - Asteroid 6471 Collins Closest Approach To Earth (1.529 AU)
• Oct 17 - Asteroid 13586 Copenhagen Closest Approach To Earth (1.957 AU)
• Oct 17 - Lecture: The Other 95% Of The Universe, Pasadena, California
• Oct 17 - 50th Anniversary (1969), Charge-Coupled Device (CCD) Created by Willard Boyle & George Smith
• Oct 18 - Apollo Asteroid 14827 Hypnos Closest Approach To Earth (0.846 AU)
• Oct 18 - Aten Asteroid 3362 Khufu Closest Approach To Earth (1.387 AU)
• Oct 18 - Dwarf Planet 136199 Eris At Opposition (95.047 AU)
• Oct 18 - Lecture: The Other 95% Of The Universe, Pasadena, California
• Oct 18 - 30th Anniversary (1989), STS-34 Launch (Space Shuttle Atlantis, Galileo Launch - Jupiter Orbiter)
• Oct 18 - Christian Friedrich Schonbein's 220th Birthday (1799)
• Oct 18-21 - 108th Annual Meeting of the American Association of the Variable Star Observers (AAVSO), Las Cruces, New Mexico
• Oct 19 - Cygnus CRS-12 (NG-12)/ SORTIE (Helio 5)/ CaNOP/ CryoCube 1 (CC 1)/ CySat 1/ HuskySat 1 (HS 1)/ NEUTRON 1/ Phoenix/ RadSat-u/ SOCRATES/ SPOC/ Argus (SLU 02)/ AztechSat 1 Antares 230 Launch (International Space Station)
• Oct 19 - Comet C/2018 N2 (ASASSN) At Opposition (2.212 AU)
• Oct 19 - Comet 200P/Larsen At Opposition (2.339 AU)
• Oct 19 - Comet P/2017 P1 (PANSTARRS) At Opposition (4.786 AU)
• Oct 19 - Amor Asteroid 3102 Krok Closest Approach To Earth (0.694 AU)
• Oct 19 - Asteroid 12325 Bogota Closest Approach To Earth (1.226 AU)
• Oct 19 - Amor Asteroid 2608 Seneca Closest Approach To Earth (2.972 AU)
• Oct 20 - Mercury At Its Greatest Eastern Elongation (25 Degrees)
• Oct 20 - Comet 354P/LINEAR At Opposition (1.159 AU)
• Oct 20 - Comet C/2018 N2 (ASASSN) Closest Approach To Earth (2.212 AU)
• Oct 20 - Comet P/2007 B1 (Christensen) At Opposition (3.254 AU)
• Oct 20 - Apollo Asteroid 6489 Golevka Closest Approach To Earth (1.533 AU)
• Oct 20 - Asteroid 9674 Slovenija Closest Approach To Earth (1.786 AU)
• Oct 20 - Kuiper Belt Object 202421 (2005 UQ513) At Opposition (47.064 AU)
• Oct 20 - 25th Anniversary (1994), Coleman Meteorite Fall (Hit House in Michigan)
• Oct 21 - Orionids Meteor Shower Peak
• Oct 21 - Asteroid 253 Mathilde Occults 2UCAC 36985971 (11.9 Magnitude Star)
• Oct 21 - Asteroid 5860 Deankootz Closest Approach To Earth (0.962 AU)
• Oct 21 - Asteroid 1388 Aphrodite Closest Approach To Earth (1.952 AU)
• Oct 21 - Asteroid 100007 Peters Closest Approach To Earth (2.247 AU)
• Oct 21-23 -[Apr 03] 7th Neutrino Geoscience International Conference, Prague, Czech Repulic
• Oct 21-24 -[Apr 09] 2019 International Workshop on Baryon and Lepton Number Violation (BLV2019), Madrid, Spain
• Oct 21-25 - 70th International Astronautical Congress (IAC) 2019: Space - The Power of the Past, the Promise of the Future, Washington DC
• Oct 21-25 - IAU Symposium 357: White Dwarfs as Probes of Fundamental Physics and Tracers of Planetary, Stellar and Galactic Evolution, Hilo, Hawaii
• Oct 21-25 - Conference: New Horizons in Galactic Center Astronomy and Beyond, Yokohama, Japan
• Oct 21-25 - Conference: The Future of X-ray Timing, Amsterdam, The Netherlands
• Oct 21-25 - Conference: In the Spirit of Lyot 2019, Tokyo, Japan
• Oct 21-25 - Conference: Cosmic Evolution of Quasars - From the First Light to Local Relics, Beijing, China
• Oct 21-25 - Symposium on Artificial Intelligence for Science, Industry and Society, Mexico City, Mexico
• Oct 22 - Comet P/2013 A2 (Scotti) Closest Approach To Earth (2.884 AU)
• Oct 22 - Apollo Asteroid 2017 MN8 Near-Earth Flyby (0.093 AU)
• Oct 22 - Asteroid 8084 Dallas Closest Approach To Earth (2.366 AU)
• Oct 22 - Max Beyer's 125th Birthday (1894)
• Oct 22-25 - DynVarMIP Workhop on Atmospheric Circulation in a Changing Climate, Madrid, Spain
• Oct 23 - Comet P/2010 B2 (WISE) At Opposition (2.393 AU)
• Oct 23 - Amor Asteroid 1580 Betulia Closest Approach To Earth (2.286 AU)
• Oct 23 - Zhang Daqing's 50th Birthday (1969)
• Oct 23 - Lance Benner's 55th Birthday (1964)
• Oct 23-25 - WE-Heraeus-Seminar: Chemical Evolution of Cosmic Matter, Bad Honnef, Germany
• Oct 23-26 -[Apr 10] Conference: Quantum Gases, Fundamental Interactions and Cosmology (QFC 2019), Pisa, Italy
• Oct 24 - Comet 354P/LINEAR Closest Approach To Earth (1.156 AU)
• Oct 24 - Comet 77P/Longmore At Opposition (3.911 AU)
• Oct 24 - Comet P/2009 SK280 (Spacewatch-Hill) Perihelion (4.209 AU)
• Oct 24 - Asteroid 16 Psyche Occults UCAC4 362-196994 (10.2 Magnitude Star)
• Oct 24 - Asteroid 1997 Leverrier Closest Approach To Earth (0.851 AU)
• Oct 24 - Asteroid 35352 Texas Closest Approach To Earth (1.259 AU)
• Oct 24 - Asteroid 10071 Paraguay Closest Approach To Earth (1.542 AU)
• Oct 24 - Wilhelm Weber's 215th Birthday (1804)
• Oct 25 - Comet C/2019 D1 (Flewelling) At Opposition (1.723 AU)
• Oct 25 - Aten Asteroid 2017 TG5 Near-Earth Flyby (0.037 AU)
• Oct 25 - Apollo Asteroid 162082 (1998 HL1) Near-Earth Flyby (0.042 AU)
• Oct 25 - Kuiper Belt Object 308379 (2005 RS43) At Opposition (42.924 AU)
• Oct 25 - Heinrich Schwabe's 230th Birthday (1789)
• Oct 26 - Comet 76P/West-Kohoutek-Ikemura Perihelion (1.605 AU)
• Oct 26 - Apollo Asteroid 1863 Antinous Closest Approach To Earth (1.522 AU)
• Oct 26 - 15th Anniversary (2004), Cassini, 1st Targeted Titan Flyby
• Oct 27 - European Summer Time Ends - Set Clock Back 1 Hour (European Union)
• Oct 27 - Uranus At Opposition
• Oct 27 - Asteroid 3353 Jarvis Closest Approach To Earth (0.959 AU)
• Oct 27 - Asteroid 797 Montana Closest Approach To Earth (1.687 AU)
• Oct 27 - Asteroid 3526 Jeffbell Closest Approach To Earth (1.861 AU)
• Oct 27 - Asteroid 5760 Mittlefehldt Closest Approach To Earth (1.925 AU)
• Oct 27 - Centaur Object 2015 JH1 At Opposition (8.252 AU)
• Oct 27 - Neptune Trojan 2011 SO277 At Opposition (29.518 AU)
• Oct 28 - Comet P/2018 L1 (PANSTARRS) At Opposition (2.254 AU)
• Oct 28 - Asteroid 128036 Rafaelnadal Closest Approach To Earth (1.830 AU)
• Oct 28 - Centaur Object 20461 Dioretsa At Opposition (30.283 AU)
• Oct 28 - 45th Anniverary (1974), Luna 23 Launch (USSR Moon Lander)
• Oct 28-29 - 10th Forum for New Leaders in Space Science, Washington DC
• Oct 28-30 - 2nd RPI Space Imaging Workshop, Saratoga Springs, New York
• Oct 28-30 - 15th International Conference on Atmospheric Sciences and Applications to Air Quality, Kuala Lumpur, Malaysia
• Oct 28-31 - Conference: The Journey of Galaxies in the Assembling Cosmic Structures, Trieste, Italy
• Oct 28-Nov 01 - Conference: Gamma-ray Bursts in the Gravitational Wave Era 2019, Yokohama, Japan
• Oct 28-Nov 01 - Workshop: Revolutionary Spectroscopic Facilities of Today as a Springboard to Early JWST Science, Leiden, The Netherlands
• Oct 29 - Comet P/2004 WR9 (LINEAR) At Opposition (1.490 AU)
• Oct 29 - Asteroid 2099 Opik Closest Approach To Earth (0.518 AU)
• Oct 29 - Aten Asteroid 3753 Cruithne Closest Approach To Earth (0.558 AU)
• Oct 29 - Asteroid 9342 Carygrant Closest Approach To Earth (0.970 AU)
• Oct 29 - Asteroid 4238 Audrey Closest Approach To Earth (1.568 AU)
• Oct 29 - Apollo Asteroid 314082 Dryope Closest Approach To Earth (2.060 AU)
• Oct 29 - Kuiper Belt Object 55636 (2002 TX300) At Opposition (41.813 AU)
• Oct 30 - Mercury Passes 2.7 Degrees From Venus
• Oct 30 - Asteroid 493 Griseldis Occults HIP 44574 (6.4 Magnitude Star)
• Oct 30 - Aten Asteroid 2017 SE20 Near-Earth Flyby (0.074 AU)
• Oct 30 - Asteroid 2224 Tucson Closest Approach To Earth (1.910 AU)
• Oct 30 - Asteroid 2404 Antarctica Closest Approach To Earth (2.442 AU)
• Oct 30 - 20th Anniversary (1999), Discovery of the Los Angeles Meteorite (Mars Meteorite)
• Oct 30-Nov 01 - 21st China Satellite Application Conference, Beijing, China
• Oct 31 - Asteroid 678 Fredegundis Occults HIP 9153 (4.9 Magnitude Star)
• Oct 31 - Apollo Asteroid 2011 SE97 Near-Earth Flyby (0.098 AU)
• Oct 31 - Asteroid 13599 Lisbon Closest Approach To Earth (1.005 AU)
• Oct 31 - Asteroid 83360 Catalina Closest Approach To Earth (1.344 AU)
• Oct 31 - Amor Asteroid 8034 Akka Closest Approach To Earth (1.438 AU)
• Oct 31 - Asteroid 6546 Kaye Closest Approach To Earth (2.551 AU)

November 2019

• Nov ?? -[Apr 03] Crew Space Transportation 100 (CST-100) Atlas 5 Launch (Manned)
• Nov ?? - LARES 2 Vega-C Launch
• Nov ?? - Resurs-P N4 Soyuz-2.1b Launch
• Nov ?? - X-Ray Polarimeter Satellite (XPOSAT) Launch
• Nov ?? - Falcon Eye 2 Vega Launch
• Nov ?? -[Apr 07] GISAT 2 PSLV-II Launch
• Nov ?? -[Apr 07] RISAT 1A PSLV Launch
• Nov 01 - Apollo Asteroid 2014 UC192 Near-Earth Flyby (0.084 AU)
• Nov 01 - Asteroid 8299 Tealeoni Closest Approach To Earth (1.408 AU)
• Nov 01 - Asteroid 8837 London Closest Approach To Earth (1.510 AU)
• Nov 01 - Asteroid 3784 Chopin Closest Approach To Earth (2.309 AU)
• Nov 01 - Neptune Trojan 2005 TN53 At Opposition (27.986 AU)
• Nov 01 - Neptune Trojan 385695 (2005 TO74) At Opposition (28.679 AU)
• Nov 01 - Neptune Trojan 2001 QR322 At Opposition (29.168 AU)
• Nov 01 - Kuiper Belt Object 15760 Albion (1992 QB1) At Opposition (40.396 AU)
• Nov 01 - Kuiper Belt Object 42301 (2001 UR163) At Opposition (52.250 AU)
• Nov 01 - 25th Anniversary (1994), Wind Launch
• Nov 01 - 130th Anniversary (1889), Edward Barnard Observes Dark Shadows ("Spokes") on Saturn's Rings
• Nov 02 - Moon Occults Saturn
• Nov 02 - Moon Occults Dwarf Planet Pluto
• Nov 02 - Comet 65P/Gunn At Opposition (2.305 AU)
• Nov 02 - Apollo Asteroid 7092 Cadmus Closest Approach To Earth (1.669 AU)
• Nov 02 - Asteroid 2309 Mr. Spock Closest Approach To Earth (1.795 AU)
• Nov 02 - Neptune Trojan 385571 Otrera At Opposition (28.337 AU)
• Nov 02 - Griffith Observatory Public Star Party, Los Angeles
• Nov 02 - Richard Taylor's 90th Birthday (1929)
• Nov 03 - Daylight Saving - Set Clock Back 1 Hour (United States)
• Nov 03 - Taurids Meteor Shower Peak
• Nov 03 - Comet 261P/Larson Closest Approach To Earth (1.316 AU)
• Nov 03 - Apollo Asteroid 2015 JD1 Near-Earth Flyby (0.033 AU)
• Nov 03 - Asteroid 78756 Sloan Closest Approach To Earth (2.103 AU)
• Nov 03 - 25th Anniversary (1994), STS-66 Launch (Space Shuttle Atlantis, ATLAS-3)
• Nov 03 - Kevin Chilton's 65th Birthday (1954)
• Nov 03-08 - 16th Latin American Regional IAU Meeting, Antofagasta, Chile
• Nov 04 - Comet 372P/McNaught Closest Approach To Earth (3.048 AU)
• Nov 04 - Comet P/2005 XA54 (LONEOS-Hill) At Opposition (3.473 AU)
• Nov 04 - Asteroid 4 Vesta Occults TYC 0650-00327-1 (11.7 Magnitude Star)
• Nov 04 - Apollo Asteroid 11885 Summanus Closest Approach To Earth (0.347 AU)
• Nov 04 - Asteroid 3768 Monroe Closest Approach To Earth (1.569 AU)
• Nov 04 - Asteroid 81203 Polynesia Closest Approach To Earth (2.115 AU)
• Nov 04 - Neptune Trojan 2014 QO441 At Opposition (32.322 AU)
• Nov 04-08 - 4th COSPAR Symposium: Small Satellites for Sustainable Science And Development, Herzliya, Israel
• Nov 05 - Comet 245P/WISE At Opposition (1.673 AU)
• Nov 05 - Comet P/2010 B2 (WISE) Closest Approach To Earth (2.369 AU)
• Nov 05 - Comet C/2018 Y1 (Iwamoto) At Opposition (2.800 AU)
• Nov 05 - Apollo Asteroid 2012 PW Near-Earth Flyby (0.078 AU)
• Nov 05 - Asteroid 6349 Acapulco Closest Approach To Earth (2.047 AU)
• Nov 05 - Kuiper Belt Object 472271 (2014 UM33) At Opposition (42.565 AU)
• Nov 05-07 - Workshop: Asteroid Science in the Age of Hayabusa2 and OSIRIS-REx, Tucson, Arizona
• Nov 05-07 - Global Milsatcam 2019 Conference, London, United Kingdom
• Nov 05-08 - Conference: Mars Extant Life - What's Next? Carlsbad, New Mexico
• Nov 06 - Asteroid 30928 Jefferson Closest Approach To Earth (1.411 AU)
• Nov 06 - Asteroid 26733 Nanavistor Closest Approach To Earth (1.550)
• Nov 06 - Asteroid 15058 Billcooke Closest Approach To Earth (1.556 AU)
• Nov 06 - Asteroid 2157 Ashbrook Closest Approach To Earth (2.069 AU)
• Nov 06 - Centaur Object 49036 Pelion At Opposition (20.192 AU)
• Nov 06 - Plutino 47171 Lempo (2 Moons) At Opposition (29.667 AU)
• Nov 06 - Krisztian Sarneczky's 45th Birthday (1974)
• Nov 06-07 - 4th Annual James Clerk Maxwell Telescope (JCMT) Users Meeting, Tapei, Taiwan
• Nov 06-08 - 19th GEIA Conference: The Global Emission Initiative's Efforts to Accelerate Societal Transformations, Santiago, Chile
• Nov 07 - Comet 168P/Hergenrother Closest Approach To Earth (1.069 AU)
• Nov 07 - Comet C/2016 Q4 (Kowalski) Closest Approach To Earth (6.775 AU)
• Nov 07 - Asteroid 4 Vesta Occults UCAC5 494-004608 (12.3 Magnitude Star)
• Nov 07 - Apollo Asteroid 1866 Sisyphus Closest Approach To Earth (0.641 AU)
• Nov 07 - Asteroid 2000 Herschel Closest Approach To Earth (0.895 AU)
• Nov 07 - Asteroid 3350 Scobee Closest Approach To Earth (1.211 AU)
• Nov 07 - Atira Asteroid 418265 (2008 EA32) Closest Approach To Earth (1.392 AU)
• Nov 07 - Asteroid 4115 Peternorton Closest Approach To Earth (2.015 AU)
• Nov 07 - Neptune Trojan 2014 QP441 At Opposition (27.937 AU)
• Nov 07 - Kuiper Belt Object 120348 (2004 TY364) At Opposition (37.986 AU)
• Nov 07 - Kuiper Belt Object 2014 UZ224 At Opposition (89.292 AU)
• Nov 07-08 - 1st Spanish Meeting on Galaxy Clusters, Madrid, Spain
• Nov 07-09 - SpaceVision 2019 Conference, Tempe, Arizona
• Nov 08 - Nauka/ ERA Proton-M P4 Launch (International Space Station 03R)
• Nov 08 - Moon Occults Asteroid 21 Lutetia
• Nov 08 - Comet 372P/McNaught At Opposition (3.050 AU)
• Nov 08 - Comet P/2018 P4 (PANSTARRS) Closest Approach To Earth (3.353 AU)
• Nov 08 - Comet C/2018 A3 (ATLAS) At Opposition (3.381 AU)
• Nov 08 - Asteroid 17898 Scottsheppard Closest Approach To Earth (1.186 AU)
• Nov 08 - Asteroid 4987 Flamsteed Closest Approach To Earth (1.441 AU)
• Nov 08 - Neptune Trojan 2013 VX30 At Opposition (26.626 AU)
• Nov 08 - Neptune Trojan 2014 UU240 At Opposition (29.746 AU)
• Nov 08 - Plutino 144897 (2004 UX10) At Opposition (38.353 AU)
• Nov 08 - 15th Anniversary (2004), Orlando Meteorite Fall (Hit Car, House in Florida)
• Nov 08 - 35th Anniversary (1984), STS-51-A Launch (Space Shuttle Discovery - Anna Lee Fisher, 1st Mother in Space)
• Nov 08 - 50th Anniversary (1969), Azur Launch (Germany's 1st Scientific Satellite)
• Nov 08 - Johannes Rydberg's 165th Birthday (1854)
• Nov 09 - Carl Sagan Day
• Nov 09 - Comet 68P/Klemola Perihelion (1.794 AU)
• Nov 09 - Comet 362P At Opposition (3.983 AU)
• Nov 09 - Asteroid 100000 Astronautica (0.847 AU)
• Nov 09 - Asteroid 1789 Dobrovolsky Closest Approach To Earth (1.194 AU)
• Nov 09 - Apollo Asteroid 12711 Tukmit Closest Approach To Earth (1.749 AU)
• Nov 09 - Kuiper Belt Object 55637 (2002 UX25) At Opposition (39.359 AU)
• Nov 09 - Kuiper Belt Object 84522 (2002 TC302) At Opposition (43.194 AU)
• Nov 09 - Carl Sagan's 85th Birthday (1934)
• Nov 09 - Annibale de Gasparis' 200th Birthday (1819)
• Nov 10 - Asteroid 4 Vesta Closest Approach To Earth (1.565 AU)
• Nov 10- Amor Asteroid 5620 Jasonwheeler Closest Approach To Earth (1.583 AU)
• Nov 10 - Asteroid 1941 Wild Closest Approach To Earth (2.078 AU)
• Nov 10 - Asteroid 8000 Isaac Newton Closest Approach To Earth (2.096 AU)
• Nov 10 - Asteroid 115561 Frankherbert Closest Approach To Earth (2.106 AU)
• Nov 10-15 - 6th Interstellar Symposium and Interstellar Propulsion Workshop, Wichita, Kansas
• Nov 11 - Transit of Mercury Across the Sun
• Nov 11 - Comet C/2018 N2 (ASASSN) Perihelion (3.125 AU)
• Nov 11 - Comet 173P/Mueller At Opposition (4.227 AU)
• Nov 11 - Comet C/2015 XY1 (Lemmon) Closest Approach To Earth (7.740 AU)
• Nov 11 - Apollo Asteroid 2005 WD Near-Earth Flyby (0.060 AU)
• Nov 11 - Asteroid 268242 Pebble Closest Approach To Earth (0.909 AU)
• Nov 11 - Asteroid 2975 Spahr Closest Approach To Earth (1.430 AU)
• Nov 11 - Neptune Trojan 2006 RJ103 At Opposition (29.196 AU)
• Nov 11-13 - 6th Workshop on Advanced RF Sensors and Remote Sensing Instruments (ARSI '19)/4th Ka-band Earth Observation Radar Missions Workshop (KEO '19), Noordwijk, The Netherlands
• Nov 11-14 - 22nd IAA Humans in Space Symposium, Dubai, United Arab Emirates
• Nov 12 - Comet P/2000 R2 (LINEAR) At Opposition (1.179 AU)
• Nov 12 - Comet P/2003 F2 (NEAT) Perihelion (2.970 AU)
• Nov 12 - Comet P/2018 L4 (PANSTARRS) At Opposition (3.469 AU)
• Nov 12 - Comet 251P/LINEAR At Opposition (3.961 AU)
• Nov 12 - Apollo Asteroid 2010 JG Near-Earth Flyby (0.050 AU)
• Nov 12 - Asteroid 1198 Atlantis Closest Approach To Earth (0.894 AU)
• Nov 12 - Amor Asteroid 8709 Kadlu Closest Approach To Earth (2.260 AU)
• Nov 12 - Neptune Trojan 2012 UV177 At Opposition (27.962 AU)
• Nov 12 - 5th Anniversary (2014), Rosetta (Philae), Comet 67P/Churyumov-Gerasimenko Landing
• Nov 12 - Audouin Dollfus' 95th Birthday (1924)
• Nov 12 - 140th Anniversary (1879), Meteorite Fall in Huang-hsiang, China (Hit Houses)
• Nov 12-15 - IAU Symposium 358: Astronomy for Equity, Diversity and Inclusion, Tokyo, Japan
• Nov 13 - Comet 100P/Hartley At Opposition (3.798 AU)
• Nov 13 - Asteroid 1153 Wallenbergia Occults HIP 33212 (6.7 Magnitude Star)
• Nov 13 - Amor Asteroid 481984 Cernunnos Closest Approach To Earth (0.846 AU)
• Nov 13 - Amor Asteroid 164215 Doloreshill Closest Approach To Earth (2.037 AU)
• Nov 13 - 10th Anniversary (2009), Rosetta, 3rd Earth Flyby
• Nov 14 - 50th Anniversary (1969), Apollo 12 Launch (Manned Moon Mission)
• Nov 14 - Comet 114P/Wiseman-Skiff At Opposition (0.760 AU)
• Nov 14 - Comet C/2016 Q4 (Kowalski) At Opposition (6.782 AU)
• Nov 14 - Asteroid 119 Althaea Occults HIP 20205 (3.8 Magnitude Star)
• Nov 14 - Asteroid 7986 Romania Closest Approach To Earth (1.321 AU)
• Nov 14 - Asteroid 58221 Boston Closest Approach To Earth (1.641 AU)
• Nov 14 - Lecture: Science From the International Space Station, Pasadena, California
• Nov 14-15 - Dorothy Hill Women in Earth Sciences Symposium, Brisbane, Australia
• Nov 15 - Comet P/2010 U2 (Hill) Closest Approach To Earth (1.669 AU)
• Nov 15 - Comet 155P/Shoemaker Perihelion (1.802 AU)
• Nov 15 - Comet 73P-S/Schwassmann-Wachmann At Opposition (3.195 AU)
• Nov 15 - Comet 283P/Spacewatch At Opposition (3.689 AU)
• Nov 15 - Comet 173P/Mueller Closest Approach To Earth (4.225 AU)
• Nov 15 - Apollo Asteroid 2018 BP Near-Earth Flyby (0.062 AU)
• Nov 15 - Asteroid 51829 Williemccool Closest Approach To Earth (1.411 AU)
• Nov 15 - Asteroid 881 Athene Closest Approach To Earth (1.624 AU)
• Nov 15 - Lecture: Science From the International Space Station, Pasadena, California
• Nov 15 - 15th Anniversary (2004), SMART-1, Moon Orbit Insertion
• Nov 15 - 45th Anniversary (1974), Intasat Launch (Spain's 1st Satellite)
• Nov 15 - Dirk Klinkenberg's 310th Birthday (1709)
• Nov 16 - Comet P/2011 U1 (PANSTARRS) At Opposition (2.086 AU)
• Nov 16 - Comet 66P/du Toit At Opposition (1.106 AU)
• Nov 16 - Asteroid 15318 Innsbrook Closest Approach To Earth (1.642 AU)
• Nov 16 - Kuiper Belt Object 2012 VP113 At Opposition (82.962 AU)
• Nov 16 - 10th Anniversary (2009), STS-129 Launch (Space Shuttle Atlantis, ISS Assembly Flight)
• Nov 17 - Leonids Meteor Shower Peak
• Nov 17 - Asteroid 2825 Crosby Closest Approach To Earth (0.871 AU)
• Nov 17 - Claes-Ingvar Lagerkvist's 75th Birthday (1944)
• Nov 17-22 - 7th Subaru International Conference: Subaru Telescope 20th Anniversary, Waikoloa Beach, Hawaii
• Nov 18 - Comet 261P/Larson At Opposition (1.343 AU)
• Nov 18 - Comet 215P/NEAT Perihelion (3.605 AU)
• Nov 18 - Comet C/2017 U4 (PANSTARRS) Closest Approach To Earth (7.164 AU)
• Nov 18 - Asteroid 327 Columbia Closest Approach To Earth (1.862 AU)
• Nov 18 - 30th Anniversary (1989), COBE Launch
• Nov 18 - Pete Knight's 90th Birthday (1929)
• Nov 18-22 - Conference: Lithium in the Universe - to Be or not to Be?, Rome, Italy
• Nov 18-22 - Conference: The Art of Measuring Galaxy Physical Properties, Milan, Italy
• Nov 19 - Comet P/2004 WR9 (LINEAR) Closest Approach To Earth (1.433 AU)
• Nov 19 - Atira Asteroid 2019 AQ3 Closest Approach To Earth (0.255 AU)
• Nov 19 - Plutino 455502 (2003 UZ413) At Opposition (43.211 AU)
• Nov 19-21 - Space Tech Expo - Europe, Bremen, Germany
• Nov 19-21 - APSCC Satellite Conference and Exhibition, Bangkok, Thailand
• Nov 19-22 - ESA/ESO SCIOPS 2019 Workshop: Cross Facilities Collaboration in the Multi Messenger Era, Madrid, Spain
• Nov 20 - Elektro-L N3 Proton-M/DM-03 Launch
• Nov 20 - Comet 266P/Christensen At Opposition (1.543 AU)
• Nov 20 - Comet 73P-Y/Schwassmann-Wachmann At Opposition (3.195 AU)
• Nov 20 - Comet P/2018 P4 (PANSTARRS) At Opposition (3.372 AU)
• Nov 20 - Comet C/2015 XY1 (Lemmon) At Opposition (7.753 AU)
• Nov 20 - Atira Asteroid 2017 XA1 Closest Approach To Earth (1.249 AU)
• Nov 20 - Asteroid 896 Sphinx Closest Approach To Earth (1.650 AU)
• Nov 20 - Asteroid 2127 Tanya Closest Approach To Earth (2.299 AU)
• Nov 20 - Asteroid 27596 Maldives Closest Approach To Earth (2.341 AU)
• Nov 20 - Neptune Trojan 2015 VW165 At Opposition (28.968 AU)
• Nov 20 - 15th Anniversary (2004), Swift Launch
• Nov 20 - Benoit Madelbrot's 95th Birthday (1924)
• Nov 20 - Edwin Hubble's 130th Birthday (1889)
• Nov 21 - Lunar Pathfinder PSLV Launch
• Nov 21 - Comet 260P/McNaught At Opposition (0.708 AU)
• Nov 21 - Comet C/2018 L2 (ATLAS) At Opposition (3.485 AU)
• Nov 21 - Aten Asteroid 481394 (2006 SF6) Near-Earth Flyby (0.029 AU)
• Nov 21 - Apollo Asteroid 2011 UB Near-Earth Flyby (0.088 AU)
• Nov 21 - Asteroid 3773 Smithsonian Closest Approach To Earth (1.015 AU)
• Nov 21 - Asteroid 20469 Dudleymoore Closest Approach To Earth (1.718 AU)
• Nov 21 - Asteroid 16809 Galapagos Closest Approach To Earth (1.820 AU)
• Nov 21 - Asteroid 2521 Heidi Closest Approach To Earth (1.889 AU)
• Nov 21 - Asteroid 9499 Excalibur Closest Approach To Earth (1.942 AU)
• Nov 21 - Neptune Trojan 2015 VV165 At Opposition (27.423 AU)
• Nov 21 - Kuiper Belt Object 523645 (2010 VK201) At Opposition (47.155 AU)
• Nov 21 - Kuiper Belt Object 90377 Sedna At Opposition (83.694 AU)
• Nov 21-23 - 1st International Conference on Modeling, Machine Learning and Astronomy (MMLA), Bangalore, India
• Nov 22 - Comet P/2010 U2 (Hill) At Opposition (1.674 AU)
• Nov 22 - Comet 364P/PANSTARRS At Opposition (3.334 AU)
• Nov 22 - Aten Asteroid 1994 WR12 Near-Earth Flyby (0.074 AU)
• Nov 22 - Asteroid 2620 Santana Closest Approach To Earth (1.691 AU)
• Nov 22 - Asteroid 27500 Mandelbrot Closest Approach To Earth (1.694 AU)
• Nov 22 - Plutino 84719 (2002 VR128) At Opposition (39.097 AU)
• Nov 22 - 30th Anniversary (1989), STS-33 Launch (Space Shuttle Discovery, DOD)
• Nov 23 - Comet C/2017 U4 (PANSTARRS) At Opposition (7.169 AU)
• Nov 23 - Asteroid 1027 Aesculapia Occults HIP 31850 (6.3 Magnitude Star)
• Nov 23 - Apollo Asteroid 2008 EA9 Near-Earth Flyby (0.027 AU)
• Nov 23 - Asteroid 3904 Honda Closest Approach To Earth (1.383 AU)
• Nov 23 - Asteroid 7749 Jackschmitt Closest Approach To Earth (1.385 AU)
• Nov 23 - Asteroid 4513 Louvre Closest Approach To Earth (1.802 AU)
• Nov 23 - Asteroid 3992 Wagner Closest Approach To Earth (2.065 AU)
• Nov 23 - Asteroid 10806 Mexico Closest Approach To Earth (2.354 AU)
• Nov 23 - Neptune Trojan 2007 VL305 At Opposition (27.291 AU)
• Nov 23 - Neptune Trojan 2011 WG157 At Opposition (29.791 AU)
• Nov 23 - Neptune Trojan 2015 VX165 At Opposition (31.331 AU)
• Nov 24 - InSight, End of Primary Mission
• Nov 24 - Venus Passes 1.4 Degrees From Jupiter
• Nov 24 - Comet P/2008 CL94 (Lemmon) Closest Approach To Earth (4.682 AU)
• Nov 24 - Comet P/2008 CL94 (Lemmon) At Opposition (4.682 AU)
• Nov 24 - Atira Asteroid 164294 (2004 XZ130) Closest Approach To Earth (0.918 AU)
• Nov 24 - Asteroid 3115 Baily Closest Approach To Earth (1.231 AU)
• Nov 24 - Asteroid 6779 Perrine Closest Approach To Earth (1.269 AU)
• Nov 24 - Carolyn Hurless' 85th Birthday (1934)
• Nov 24 - 380th Anniversary (1639), 1st Observations of a Transit of Venus
• Nov 25 - Comet 197P/LINEAR At Opposition (3.475 AU)
• Nov 25 - Asteroid 21 Lutetia Occults TYC 4666-00339-1 (11.9 Magnitude Star)
• Nov 25 - Asteroid 17473 Freddiemercury Closest Approach To Earth (1.103 AU)
• Nov 25 - Asteroid 100267 JAXA Closest Approach To Earth (1.999 AU)
• Nov 25 - Asteroid 247553 Berndpauli Closest Approach To Earth (2.665 AU)
• Nov 25 - Asteroid 132904 Notkin Closest Approach To Earth (2.952 AU)
• Nov 25 - Centaur Object 2015 KJ153 At Opposition (7.431 AU)
• Nov 26 - Comet P/2012 O1 (McNaught) Closest Approach To Earth (1.977 AU)
• Nov 26 - Asteroid 4 Vesta Occults UCAC5 491-00429 (12.1 Magnitude Star)
• Nov 26 - Asteroid 10552 Stockholm Closest Approach To Earth (1.708 AU)
• Nov 26 - Asteroid 16770 Angkorwat Closest Approach To Earth (1.780 AU)
• Nov 26 - 20th Anniversary (1999), Galileo, Io 25 Flyby
• Nov 26 - 20th Anniversary (1999), Discovery of SAU 005 & SAU 008 (Mars Meteorites) in Oman
• Nov 26 - Auguste Charlois' 155th Birthday (1864)
• Nov 27 - Asteroid 770 Bali Closest Approach To Earth (0.899 AU)
• Nov 27 - Asteroid 23990 Springsteen Closest Approach To Earth (1.117 AU)
• Nov 27 - Asteroid 110299 Iceland Closest Approach To Earth (1.622 AU)
• Nov 27 - Asteroid 241418 Darmstadt Closest Approach To Earth (1.699 AU)
• Nov 27 - Atira Asteroid 459883 (2014 JX25) Closest Approach To Earth (1.847 AU)
• Nov 27 - Asteroid 10346 Triathlon Closest Approach To Earth (1.890 AU)
• Nov 27 - Asteroid 416 Vaticana Closest Approach To Earth (2.400 AU)
• Nov 27 - Uranus Trojan 2011 QF99 At Opposition (17.264 AU)
• Nov 28 - Moon Occults Jupiter
• Nov 28 - Mercury At Its Greatest Western Elongation (20 Degrees)
• Nov 28 - Comet 266P/Christensen Closest Approach To Earth (1.535 AU)
• Nov 28 - Asteroid 1818 Brahms Closest Approach To Earth (1.232 AU)
• Nov 28 - Asteroid 1193 Africa Closest Approach To Earth (1.979 AU)
• Nov 28 - Asteroid 10050 Rayman Closest Approach To Earth (2.249 AU)
• Nov 28 - 55th Anniversary (1964), Mariner 4 Launch (Mars Flyby Mission)
• Nov 29 - Moon Occults Saturn
• Nov 29 - Moon Occults Asteroid 433 Eros
• Nov 29 - Comet 203P/Korlevic At Opposition (2.256 AU)
• Nov 29 - Comet P/2018 L5 (Leonard) Closest Approach To Earth (2.937 AU)
• Nov 29 - Asteroid 9941 Iguanodon Closest Approach To Earth (1.146 AU)
• Nov 29 - Asteroid 1790 Volkov Closest Approach To Earth (1.218 AU)
• Nov 29 - Asteroid 2410 Morrison Closest Approach To Earth (1.301 AU)
• Nov 29 - Asteroid 2955 Newburn Closest Approach To Earth (1.430 AU)
• Nov 30 - Moon Occults Dwarf Planet Pluto
• Nov 30 - Comet 294P/LINEAR Perihelion (1.301 AU)
• Nov 30 - Comet P/2011 U1 (PANSTARRS) Closest Approach To Earth (2.060 AU)
• Nov 30 - Comet 37P/Forbes At Opposition (3.286 AU)
• Nov 30 - Comet P/1999 RO28 (LONEOS) At Opposition (3.856 AU)
• Nov 30 - Asteroid 3720 Hokkaido Closest Approach To Earth (1.489 AU)
• Nov 30 - Asteroid 85386 Payton Closest Approach To Earth (1.654 AU)
• Nov 30 - Asteroid 4305 Clapton Closest Approach To Earth (1.886 AU)
• Nov 30 - Kuiper Belt Object 386723 (2009 YE7) At Opposition (49.811 AU)
• Nov 30 - 65th Anniversary (1954), Sylacauga Meteorite Fall (Hit Woman in Alabama)
• Nov 30 - 410th Anniversary (1609), 1st Telescope Observations of the Moon by Galileo Galilei

December 2019

• Dec ?? - Dragon 2 USCV 1 Falcon 9 Launch (International Space Station)
• Dec ?? - X-37B OTV-6 (AFSPC) Atlas 5 Launch
• Dec ?? - Ekspress 80/ Ekspress 103 Proton-M Briz-M Launch
• Dec ?? - Angara A5 Block DM-03 Launch (Dummy Payload)
• Dec ?? - GPS 3A-03 Falcon 9 launch
• Dec ?? - Firefly Alpha Launch
• Dec ?? - SAOCOM 1B/ SARE-1B 1-4 Falcon 9 Launch
• Dec ?? -[Apr 09] IRNSS 1J PSLV-XL Launch
• Dec 01 - Comet C/2017 T2 (PANSTARRS) At Opposition (1.650 AU)
• Dec 01 - Comet 203P/Korlevic Closest Approach To Earth (2.256 AU)
• Dec 01 - Comet 73P-T/Schwassmann-Wachmann At Opposition (3.861 AU)
• Dec 01 - Apollo Asteroid 2212 Hephaistos Closest Approach To Earth (1.047 AU)
• Dec 01 - Apollo Asteroid 10563 Izhdubar Closest Approach To Earth (1.166 AU)
• Dec 01 - Asteroid 3498 Belton Closest Approach To Earth (1.138 AU)
• Dec 01 - Asteroid 3808 Tempel Closest Approach To Earth (1.343 AU)
• Dec 01 - Asteroid 7307 Takei Closest Approach To Earth (1.762 AU)
• Dec 01 - Asteroid 7536 Fahrenheit Closest Approach To Earth (2.147 AU)
• Dec 01 - Centaur Object 54598 Bienor At Opposition (13.574 AU)
• Dec 01 - 60th Anniversary (1959), 1st Color Photo of Earth Taken From Space (Thor Missile)
• Dec 02 - Comet 160P/LINEAR Perihelion (1.787 AU)
• Dec 02 - Comet 73P-AH/Schwassmann-Wachmann At Opposition (3.651 AU)
• Dec 02 - Aten Asteroid 2340 Hathor Closest Approach To Earth (1.116 AU)
• Dec 02 - Kuiper Belt Object 145453 (2005 RR43) At Opposition (38.810 AU)
• Dec 02 - 5th Anniversary (2014), Hayabusa 2 Launch
• Dec 02 - 30th Anniversary (1989), Solar Maximum Mission Reenters Earth's Atmosphere
• Dec 02 - 45th Anniversary (1974), Pioneer 11, Jupiter Flyby
• Dec 02-06 - Workshop on Distilling Climate Information for Sectoral Applications, Manilla, Philippines
• Dec 03 - Comet 73P-K/Schwassmann-Wachmann At Opposition (3.705 AU)
• Dec 03 - Asteroid 2296 Kugultinov Occults HIP 33212 (6.7 Magnitude Star)
• Dec 03 - Asteroid 97 Klotho Occults UCAC5 446-006792 (6.9 Magnitude Star)
• Dec 03 - Apollo Asteroid 2017 AP4 Near-Earth Flyby (0.022 AU)
• Dec 03 - Asteroid 8129 Michaelbusch Closest Approach To Earth (1.379 AU)
• Dec 03 - Asteroid 61189 Ohsadaharu Closest Approach To Earth (1.458 AU)
• Dec 03 - Asteroid 61342 Lovejoy Closest Approach To Earth (1.535 AU)
• Dec 03 - Asteroid 5036 Tuttle Closest Approach To Earth (2.123 AU)
• Dec 03 - Kuiper Belt Object 2006 QH181 At Opposition (83.241 AU)
• Dec 03 - 115th Anniversary (1904), Charles Perrine's Discovery of Himalia (Jupiter Moon)
• Dec 03 - Robert G Harrington's 115th Birthday (1904)
• Dec 03-06 - Twenty Years of Chandra Science Symposium, Boston, Massachusetts
• Dec 04 - CRS-19/ CIRiS/ PTD 1/ EdgeCube Falcon 9 Launch (International Space Station)
• Dec 04 - Comet 114P/Wiseman-Skiff Closest Approach To Earth (0.723 AU)
• Dec 04 - Comet C/2018 F4 (PANSTARRS) Perihelion (3.442 AU)
• Dec 04 - Comet 73P-N/Schwassmann-Wachmann At Opposition (3.755 AU)
• Dec 04 - Aten Asteroid 2010 TK7 (Earth Trojan) Closest Approach To Earth (0.212 AU)
• Dec 04 - 60th Anniversary (1959), Little Joe 2 Launch (Monkey "Sam")
• Dec 05 - Comet 298P/Christensen At Opposition (1.893 AU)
• Dec 06 - Kuiper Belt Object 229762 (2007 UK126) At Opposition (40.938 AU)
• Dec 06 - Clyde Cowan's 100th Birthday (1919)
• Dec 07 - Comet P/2006 H1 (McNaught) Perihelion (2.423 AU)
• Dec 07 - Asteroid 55 Pandora Occults HIP 24832 (6.5 Magnitude Star)
• Dec 07 - Asteroid 73769 Delphi Closest Approach To Earth (2.587 AU)
• Dec 07 - Kuiper Belt Object 2018 VG18 At Opposition (124.647 AU)
• Dec 07 - Griffith Observatory Public Star Party, Los Angeles
• Dec 08 - Comet P/2013 EW90 (Tenagra) At Opposition (2.938 AU)
• Dec 08 - Apollo Asteroid 2015 XN55 Near-Earth Flyby (0.059 AU)
• Dec 08 - Amor Asteroid 3552 Don Quixote Closest Approach To Earth (4.233 AU)
• Dec 08 - 70th Anniversary (1949), V2 Launch (Albert IV the Rhesus Monkey)
• Dec 09 - Comet P/2018 L5 (Leonard) At Opposition (2.952 AU)
• Dec 09 - Asteroid 14413 Geiger Closest Approach To Earth (1.025 AU)
• Dec 09 - Asteroid 17942 Whiterabbit Closest Approach To Earth (1.677 AU)
• Dec 09 - Asteroid 5405 Neverland Closest Approach To Earth (2.324 AU)
• Dec 09 - Centaur Object 60558 Echeclus At Opposition (8.257 AU)
• Dec 09 - Kuiper Belt Object 145451 (2005 RM43) At Opposition (36.251 AU)
• Dec 09 - 75th Anniversary (1944), Wallops Island Launch Site Founded
• Dec 09-12 - 1st International Orbital Debris Conference (IOC), Houston, Texas
• Dec 09-13 - 100th American Geophysical Union (AGU) Fall Meeting, San Francisco, California
• Dec 09-14 - Workshop on Distilling Climate Information for Sectoral Applications, Manila, Philippines
• Dec 10 - Comet P/1996 R2 (Lagerkvist) Closest Approach To Earth (2.128 AU)
• Dec 10 - Apollo Asteroid 2011 WN15 Near-Earth Flyby (0.058 AU)
• Dec 10 - Asteroid 6469 Armstrong Closest Approach To Earth (1.489 AU)
• Dec 10 - Asteroid 1743 Schmidt Closest Approach To Earth (1.599 AU)
• Dec 10 - Asteroid 6143 Pythagoras Closest Approach To Earth (1.905 AU)
• Dec 10 - Asteroid 4758 Hermitage Closest Approach To Earth (2.166 AU)
• Dec 10 - Asteroid 274020 Skywalker Closest Approach To Earth (2.347 AU)
• Dec 10 - 20th Anniversary (1999), X-ray Multi-Mirror Mission (XMM-Newton) Launch
• Dec 10 - 35th Anniversary (1984), Claxton Meteorite Fall (Hit Mailbox in Georgia)
• Dec 10 - 45th Anniversary (1974), Helios 1 Launch (Solar Orbiter)
• Dec 10-12 - Event: New Space Economy, Rome, Italy
• Dec 11 - Venus Passes 1.8 Degrees From Saturn
• Dec 11 - Comet 48P/Johnson Closest Approach To Earth (2.734 AU)
• Dec 11 - Comet 83D/Russell At Opposition (3.013 AU)
• Dec 11 - John Macklin's 80th Birthday (1939)
• Dec 11 - 300th Anniversary (1719), 1st Recorded Sighting of the Aurora Borealis
• Dec 12 - Comet 71P/Clark At Opposition (3.660 AU)
• Dec 12 - Comet 325P/Yang-Gao At Opposition (4.245 AU)
• Dec 12 - Apollo Asteroid 2015 XX169 Near-Earth Flyby (0.071 AU)
• Dec 12 - Asteroid 7220 Philnicholson Closest Approach To Earth (1.203 AU)
• Dec 12 - Asteroid 10463 Bannister Closest Approach To Earth (1.588 AU)
• Dec 12 - Amor Asteroid 5863 Tara Closest Approach To Earth (2.004 AU)
• Dec 12 - Asteroid 8564 Anomalocaris Closest Approach To Earth (2.320 AU)
• Dec 12 - 15th Anniversary (2004), Scott Sheppard, et al's Discovery of Saturn Moons Fornjot, Farbauti, Aegir, Bebhionn, Hati & Bergeimir
• Dec 12 - 15th Anniversary (2004), Sheppard/ Jewitt/ Kleyna's Discovery of Saturn Moon Hyrrokkin
• Dec 13 - Geminids Meteor Shower Peak
• Dec 13 - Apollo Asteroid 2010 VC140 Near-Earth Flyby (0.081 AU)
• Dec 13 - Asteroid 1691 Oort Closest Approach To Earth (1.706 AU)
• Dec 13 - Asteroid 2991 Bilbo Closest Approach To Earth (1.763 AU)
• Dec 13 - Kuiper Belt Object 2004 XR190 At Opposition (56.128 AU)
• Dec 13 - 15th Anniversary (2004), Scott Sheppard, et al's Discovery of Saturn Moons Fenrir & Bestla
• Dec 13 - Sir William McCrea's 115th Birthday (1904)
• Dec 14 - Comet 73P-AP/Schwassmann-Wachmann At Opposition (4.276 AU)
• Dec 14 - Comet 73P-AS/Schwassmann-Wachmann At Opposition (4.281 AU)
• Dec 14 - Asteroid 1602 Indiana Closest Approach To Earth (1.161 AU)
• Dec 14 - Asteroid 125071 Lugosi Closest Approach To Earth (1.188 AU)
• Dec 14 - Asteroid 188534 Mauna Kea Closest Approach To Earth (1.653 AU)
• Dec 14 - Centaur Object 8405 Asbolus At Opposition (21.658 AU)
• Dec 14 - 10th Anniversary (2009), Wide-field Infrared Survey Explorer (WISE) Launch
• Dec 14 - 20th Anniversary (1999), Dunbogan Meteorite Fall (Hit House in Australia)
• Dec 15 - Comet 9P/Tempel At Opposition (3.621 AU)
• Dec 15 - Comet 73P-BC/Schwassmann-Wachmann At Opposition (4.285 AU)
• Dec 15 - Comet 73P-AL/Schwassmann-Wachmann At Opposition (4.287 AU)
• Dec 15 - Asteroid 2062 Aten Closest Approach To Earth (1.424 AU)
• Dec 15 - Asteroid 1154 Astronomia Closest Approach To Earth (2.628 AU)
• Dec 15 - Plutino 307463 (2002 VU130) At Opposition (38.775 AU)
• Dec 15 - 35th Anniversary (1984), Vega 1 Launch (Soviet Venus/Comet Halley Mission)
• Dec 15 - Charles Augustus Young's 185th Birthday (1834)
• Dec 15-20 - 30th Texas Symposium on Relativistic Astrophysics, Portsmouth, United Kingdom
• Dec 16 - Comet 294P/LINEAR Closest Approach To Earth (1.956 AU)
• Dec 16 - Comet P/2013 EW90 (Tenagra) Closest Approach To Earth (2.931 AU)
• Dec 16 - Comet 73P-Q/Schwassmann-Wachmann At Opposition (4.290 AU)
• Dec 16 - Aten Asteroid 264357 (2000 AZ93) Near-Earth Flyby (0.057 AU)
• Dec 16 - Asteroid 3267 Glo Closest Approach To Earth (0.733 AU)
• Dec 16 - Amor Asteroid 3271 Ul Closest Approach to Earth (1.599 AU)
• Dec 16 - Amor Asteroid 3288 Seleucus Closest Approach To Earth (1.859 AU)
• Dec 16 - Asteroid 336698 Melbourne Closest Approach To Earth (2.138 AU)
• Dec 16 - Asteroid 9770 Discovery Closest Approach To Earth (1.456 AU)
• Dec 16 - Plutino 84922 (2003 VS2) At Opposition (35.726 AU)
• Dec 16 - 25th Anniversary (1994), Discovery of QUE 94201 Meteorite (Mars Meteorite)
• Dec 16 - Hans Suess' 110th Birthday (1909)
• Dec 16-20 - Workshop for Planetary Nebula Observations (WorkPlaNS II), Leiden, The Netherlands
• Dec 17 - Comet P/2012 O1 (McNaught) At Opposition (2.041 AU)
• Dec 17 - Comet 73P-AI/Schwassmann-Wachmann At Opposition (4.282 AU)
• Dec 17 - Comet 73P-BS/Schwassmann-Wachmann At Opposition (4.295 AU)
• Dec 17 - Asteroid 253 Mathilde Occults UCAC5 514-033492 (12.2 Magnitude Star)
• Dec 17 - Aten Asteroid 2011 YD29 Near-Earth Flyby (0.084 AU)
• Dec 17 - Asteroid 3197 Weissman Closest Approach To Earth (1.233 AU)
• Dec 17 - Asteroid 4559 Strauss Closest Approach To Earth (1.975 AU)
• Dec 18 - Comet 298P/Christensen Closest Approach To Earth (1.870 AU)
• Dec 18 - Comet 73P-AE/Schwassmann-Wachmann At Opposition (4.279 AU)
• Dec 18 - Comet 73P-W/Schwassmann-Wachmann At Opposition (4.284 AU)
• Dec 18 - Apollo Asteroid 2102 Tantalus Closest Approach To Earth (0.258 AU)
• Dec 18 - Asteroid 5634 Victorborge Closest Approach To Earth (1.321 AU)
• Dec 18 - Asteroid 4134 Schutz Closest Approach To Earth (1.452 AU)
• Dec 18 - Kuiper Belt Object 19521 Chaos At Opposition (40.282 AU)
• Dec 18 - Gottfried Kirch's 380th Birthday (1639)
• Dec 19 - Comet P/1996 R2 (Lagerkvist) At Opposition (2.141 AU)
• Dec 19 - Comet 73P-AG/Schwassmann-Wachmann At Opposition (4.270 AU)
• Dec 19 - Comet 73P-AQ/Schwassmann-Wachmann At Opposition (4.271 AU)
• Dec 19 - Comet 73P-AR/Schwassmann-Wachmann At Opposition (4.272 AU)
• Dec 19 - Comet 73P-BL/Schwassmann-Wachmann At Opposition (4.275 AU)
• Dec 19 - Asteroid 253 Mathilde Occults UCAC5 514-032932 (12.4 Magnitude Star)
• Dec 19 - Asteroid 7984 Marius Closest Approach To Earth (1.510 AU)
• Dec 19 - 20th Anniversary (1999), STS-103 Launch (Space Shuttle Discovery, Hubble Servicing Mission)
• Dec 19 - John Windthrop's 305th Birthday (1714)
• Dec 20 - Progress MS-13 Soyuz-2.1a Launch (International Space Station 74P)
• Dec 20 - Comet P/2013 R3 (Catalina-PANSTARRS) Closest Approach To Earth (2.011 AU)
• Dec 20 - Comet 237P/LINEAR At Opposition (4.057 AU)
• Dec 20 - Comet 73P-AC/Schwassmann-Wachmann At Opposition (4.264 AU)
• Dec 20 - Comet 73P-P/Schwassmann-Wachmann At Opposition (4.268 AU)
• Dec 20 - Apollo Asteroid 216258 (2006 WH1) Near-Earth Flyby (0.039 AU)
• Dec 20 - Asteroid 8672 Morse Closest Approach To Earth (1.853 AU)
• Dec 20 - Ames Research Center's 80th Birthday (1939)
• Dec 20 - Mt. Wilson Observatory's 115th Birthday (1904)
• Dec 21 - Comet 289P/Blanpain Perihelion (0.959 AU)
• Dec 21 - Comet 73P-AD/Schwassmann-Wachmann At Opposition (4.238 AU)
• Dec 21 - Comet 73P-E/Schwassmann-Wachmann At Opposition (4.241 AU)
• Dec 21 - Comet 73P-M/Schwassmann-Wachmann At Opposition (4.241 AU)
• Dec 21 - Comet 73P-R/Schwassmann-Wachmann At Opposition (4.244 AU)
• Dec 21 - Comet 73P-Z/Schwassmann-Wachmann At Opposition (4.244 AU)
• Dec 21 - Comet 73P-AO/Schwassmann-Wachmann At Opposition (4.246 AU)
• Dec 21 - Comet 73P-L/Schwassmann-Wachmann At Opposition (4.255 AU)
• Dec 21 - Comet 73P-X/Schwassmann-Wachmann At Opposition (4.255 AU)
• Dec 21 - Comet 73P-AN/Schwassmann-Wachmann At Opposition (4.255 AU)
• Dec 21 - Apollo Asteroid 2013 XY20 Near-Earth Flyby (0.047 AU)
• Dec 21 - Amor Asteroid 96189 Pygmalion Closest Approach To Earth (1.192 AU)
• Dec 21 - Asteroid 2002 Euler Closest Approach To Earth (1.583 AU)
• Dec 21 - Asteroid 35137 Meudon Closest Approach To Earth (1.801 AU)
• Dec 21 - Asteroid 6677 Renoir Closest Approach To Earth (2.360 AU)
• Dec 21 - Plutino 15875 (1996 TP66) At Opposition (28.576 AU)
• Dec 21 - 20th Anniversary (1999), ACRIMSAT Launch
• Dec 21 - Francis Bacon's 115th Birthday (1904)
• Dec 22 - Winter Solstice, 04:19 UT
• Dec 22 - Ursids Meteor Shower Peak
• Dec 22 - Comet 73P-AU/Schwassmann-Wachmann At Opposition (4.220 AU)
• Dec 22 - Comet 73P-AK/Schwassmann-Wachmann At Opposition (4.222 AU)
• Dec 22 - Comet 73P-G/Schwassmann-Wachmann At Opposition (4.231 AU)
• Dec 22 - Comet 73P-AV/Schwassmann-Wachmann At Opposition (4.231 AU)
• Dec 22 - Comet 73P-C/Schwassmann-Wachmann At Opposition (4.232 AU)
• Dec 22 - Comet 73P/Schwassmann-Wachmann At Opposition (4.233 AU)
• Dec 22 - Comet 73P-BT/Schwassmann-Wachmann At Opposition (4.233 AU)
• Dec 22 - Comet 73P-B/Schwassmann-Wachmann At Opposition (4.235 AU)
• Dec 22 - Comet 73P-H/Schwassmann-Wachmann At Opposition (4.235 AU)
• Dec 22 - Apollo Asteroid 2017 XQ60 Near-Earth Flyby (0.028 AU)
• Dec 22 - Asteroid 51823 Rickhusband Closest Approach To Earth (1.662 AU)
• Dec 22 - Asteroid 2046 Leningrad Closest Approach To Earth (2.146 AU)
• Dec 22 - Asteroid 93 Minerva (2 Moons) Closest Approach To Earth (2.166 AU)
• Dec 22 - Centaur Object 154783 (2004 PA44) At Opposition (21.352 AU)
• Dec 23 - Comet P/2006 R1 (Siding Spring) Perihelion (1.663 AU)
• Dec 23 - Comet 48P/Johnson At Opposition (2.756 AU)
• Dec 23 - Comet 83D/Russell Closest Approach To Earth (2.990 AU)
• Dec 23 - Comet 73P-AX/Schwassmann-Wachmann At Opposition (4.203 AU)
• Dec 23 - Comet 73P-BQ/Schwassmann-Wachmann At Opposition (4.209 AU)
• Dec 23 - Asteroid 253 Mathilde Occults TYC 0756-00277-1 (9.5 Magnitude Star)
• Dec 23 - Asteroid 16421 Roadrunner Closest Approach To Earth (1.044 AU)
• Dec 23 - Asteroid 42522 Chuckberry Closest Approach To Earth (1.367 AU)
• Dec 23 - Asteroid 13681 Monty Python Closest Approach To Earth (2.217 AU)
• Dec 23 - 50th Anniversary (1969), Argentina's Canapus II Launch (Juan the Cai Monkey)
• Dec 24 - Comet 73P-BJ/Schwassmann-Wachmann At Opposition (4.175 AU)
• Dec 24 - Comet 73P-AB/Schwassmann-Wachmann At Opposition (4.178 AU)
• Dec 24 - Comet 73P-J/Schwassmann-Wachmann At Opposition (4.186 AU)
• Dec 24 - Comet 73P-BK/Schwassmann-Wachmann At Opposition (4.187 AU)
• Dec 24 - Comet 73P-BN/Schwassmann-Wachmann At Opposition (4.192 AU)
• Dec 24 - Comet 73P-BO/Schwassmann-Wachmann At Opposition (4.194 AU)
• Dec 24 - Apollo Asteroid 418849 (2008 WM64) Near-Earth Flyby (0.079 AU)
• Dec 24 - Asteroid 13926 Berners-Lee Closest Approach To Earth (1.327 AU)
• Dec 24 - Asteroid 11055 Honduras Closest Approach To Earth (2.010 AU)
• Dec 24 - Asteroid 6676 Monet Closest Approach To Earth (1.849 AU)
• Dec 24 - Asteroid 4226 Damiaan Closest Approach To Earth (2.012 AU)
• Dec 24 - 40th Anniversary (1979), Inaugural Ariane 1 Launch
• Dec 25 - Comet 73P-AM/Schwassmann-Wachmann At Opposition (4.173 AU)
• Dec 25 - Asteroid 6563 Steinheim Closest Approach To Earth (1.165 AU)
• Dec 25 - Asteroid 17744 Jodiefoster Closest Approach To Earth (1.565 AU)
• Dec 25 - Asteroid 2875 Lagerkvist Closest Approach To Earth (1.666 AU)
• Dec 25 - Asteroid 253 Mathilde Closest Approach To Earth (1.905 AU)
• Dec 25 - Asteroid 15131 Alanalda Closest Approach To Earth (1.931 AU)
• Dec 25 - Kuiper Belt Object 78799 (2002 XW93) At Opposition (44.815 AU)
• Dec 25 - Mike Anderson's 60th Birthday (1959)
• Dec 25 - Gerhard Herzberg's 115th Birthday (1904)
• Dec 25 - 315th Anniversary (1704), Barcelona Meteorite Fall in Spain
• Dec 26 - Annular Solar Eclipse
• Dec 26 - Parker Solar Probe, 2nd Venus Flyby
• Dec 26 - Comet 73P-U/Schwassmann-Wachmann At Opposition (4.123 AU)
• Dec 26 - Aten Asteroid 310442 (2000 CH59) Near-Earth Flyby (0.049 AU)
• Dec 26 - Asteroid 42487 Angstrom Closest Approach To Earth (1.607 AU)
• Dec 26 - 45th Anniversary (1974), Salyut 4 Launch (USSR Space Station)
• Dec 27 - Moon Occults Dwarf Planet Pluto
• Dec 27 - Comet P/2016 J1-B (PANSTARRS) At Opposition (2.819 AU)
• Dec 27 - Comet P/2016 J1-A (PANSTARRS) At Opposition (2.820 AU)
• Dec 27 - Asteroid 3000 Leonardo Closest Approach To Earth (1.268 AU)
• Dec 27 - Asteroid 117329 Spencer Closest Approach To Earth (1.306 AU)
• Dec 27 - Asteroid 1718 Namibia Closest Approach To Earth (1.643 AU)
• Dec 27 - Asteroid 9969 Braille Closest Approach To Earth (2.062 AU)
• Dec 27 - Asteroid 31556 Shatner Closest Approach To Earth (2.092 AU)
• Dec 27 - Plutino 55638 (2002 VE95) At Opposition (29.245 AU)
• Dec 27 - Plutino 2005 TV189 At Opposition (31.623 AU)
• Dec 27 - 35th Anniversary (1984), Discovery of ALH84001 Meteorite in Antarctica (Mars Meteorite)
• Dec 28 - Asteroid 231307 Peterfalk Closest Approach To Earth (1.824 AU)
• Dec 28 - Asteroid 19578 Kirkdouglas Closest Approach To Earth (1.835 AU)
• Dec 28 - Asteroid 15417 Babylon Closest Approach To Earth (3.162 AU)
• Dec 28 - Plutino 2002 XV93 At Opposition (37.529 AU)
• Dec 28 - Maarten Schmidt's 90th Birthday (1929)
• Dec 29 - Moon Occults Venus
• Dec 29 - Comet C/2017 T2 (PANSTARRS) Closest Approach To Earth (1.520 AU)
• Dec 29 - Comet P/2017 R1 (PANSTARRS) At Opposition (3.623 AU)
• Dec 29 - Comet 73P-AT/Schwassmann-Wachmann At Opposition (4.036 AU)
• Dec 29 - Aten Asteroid 2013 ND15 (Venus Trojan) Closest Approach To Earth (0.695 AU)
• Dec 29 - Asteroid 6600 Qwerty Closest Approach To Earth (1.034 AU)
• Dec 29 - Asteroid 3156 Ellington Closest Approach To Earth (1.434 AU)
• Dec 29 - Asteroid 3875 Staehle Closest Approach To Earth (1.544 AU)
• Dec 29 - Asteroid 6373 Stern Closest Approach To Earth (1.657 AU)
• Dec 30 - Comet 76P/West-Kohoutek-Ikemura Closest Approach To Earth (0.950 AU)
• Dec 30 - Comet P/2013 R3 (Catalina-PANSTARRS) At Opposition (2.025 AU)
• Dec 30 - Comet P/2016 J1-A (PANSTARRS) Closest Approach To Earth (2.818 AU)
• Dec 30 - Comet P/2016 J1-B (PANSTARRS) Closest Approach To Earth (2.818 AU)
• Dec 30 - Comet C/2014 E1 (Larson) At Opposition (3.095 AU)
• Dec 30 - Comet 135P/Shoemaker-Levy At Opposition (3.458 AU)
• Dec 30 - Comet 73P-BF/Schwassmann-Wachmann At Opposition (3.982 AU)
• Dec 30 - Comet 89P/Russell At Opposition (4.220 AU)
• Dec 30 - Apollo Asteroid 2018 BR1 Near-Earth Flyby (0.062 AU)
• Dec 30 - Asteroid 3162 Nostalgia Closest Approach To Earth (1.710 AU)
• Dec 30 - Asteroid 7291 Hyakutake Closest Approach To Earth (1.844 AU)
• Dec 30 - Asteroid 886 Washingtonia Closest Approach To Earth (2.243 AU)
• Dec 30 - Asteroid 284996 Rosaparks Closest Approach To Earth (2.482 AU)
• Dec 30 - Asteroid 54521 Aladdin Closest Approach To Earth (2.586 AU)
• Dec 30 - Asteroid 6227 Alanrubin Closest Approach To Earth (2.749 AU)
• Dec 30 - John Bahcall's 85th Birthday (1934)
• Dec 31 - Comet 337P/WISE At Opposition (3.845 AU)
• Dec 31 - Comet 73P-BD/Schwassmann-Wachmann At Opposition (3.921 AU)
• Dec 31 - Comet 73P-BG/Schwassmann-Wachmann At Opposition (3.939 AU)
• Dec 31 - Comet 73P-BR/Schwassmann-Wachmann At Opposition (3.961 AU)
• Dec 31 - Asteroid 253 Mathilde Occults 2UCAC 36268859 (12.1 Magnitude Star)
• Dec 31 - Asteroid 7672 Hawking Closest Approach To Earth (1.171 AU)
• Dec 31 - Asteroid 7495 Feynman Closest Approach To Earth (1.449 AU)
• Dec 31 - Asteroid 18024 Dobson Closest Approach To Earth (2.345 AU)
• Dec 31 - 15th Anniversary (2004), Cassini, Iapetus Flyby
• Dec 31 - Robert Aiken's 155th Birthday (1864)

January 2020

• Jan ?? - CRS-20/ Bartolomeo/ GEROS Falcon 9 Launch (International Space Station)
• Jan ?? - Aditya-L1 PSLV-XL Launch
• Jan ?? - AEHF-6 Atlas 5 Launch
• Jan ?? - 5th Anniversary (2015), Venus Express Burns Up in Venus' Atmosphere
• Jan 01 - Comet 73P-BB/Schwassmann-Wachmann At Opposition (3.874 AU)
• Jan 01 - Comet 73P-V/Schwassmann-Wachmann At Opposition (3.948 AU)
• Jan 01 - Apollo Asteroid 2013 EC20 Closest Approach To Earth (0.162 AU)
• Jan 01 - Apollo Asteroid 6239 Minos Closest Approach To Earth (0.424 AU)
• Jan 01 - Asteroid 11548 Jerrylewis Closest Approach To Earth (1.048 AU)
• Jan 01 - Asteroid 498 Tokio Closest Approach To Earth (1.921 AU)
• Jan 02 - Comet 223P/Skiff Closest Approach To Earth (2.443 AU)
• Jan 02 - Comet P/2015 F1 (PANSTARRS) At Opposition (2.935 AU)
• Jan 02 - Comet 73P-BM/Schwassmann-Wachmann At Opposition (3.836 AU)
• Jan 02 - Comet 73P-BH/Schwassmann-Wachmann At Opposition (3.837 AU)
• Jan 02 - Comet 73P-BI/Schwassmann-Wachmann At Opposition (3.837 AU)
• Jan 02 - Comet 73P-BP/Schwassmann-Wachmann At Opposition (3.837 AU)
• Jan 02 - Comet 73P-BA/Schwassmann-Wachmann At Opposition (3.845 AU)
• Jan 02 - Asteroid 3229 Solnhofen Closest Approach To Earth (1.571 AU)
• Jan 02 - Asteroid 12757 Yangtze Closest Approach To Earth (2.064 AU)
• Jan 02 - Asteroid 336694 Fey Closest Approach To Earth (2.357 AU)
• Jan 02 - Isaac Asimov's 100th Birthday (1920)
• Jan 02 - Leslie Peltier's 120th Birthday (1900)
• Jan 03 - Quadrantids Meteor Shower Peak
• Jan 03 - Comet 73P-BE/Schwassmann-Wachmann At Opposition (3.833 AU)
• Jan 03 - Asteroid 46686 Anitasohus Closest Approach To Earth (1.274 AU)
• Jan 03 - Asteroid 656 Beagle Closest Approach To Earth (1.897 AU)
• Jan 03 - Asteroid 3062 Wren Closest Approach To Earth (1.950 AU)
• Jan 03 - 20th Annivesary (2000), Galileo, Europa 26 Flyby
• Jan 03 - 50th Anniversary (1970), Lost City Meteorite Fall (Hit House in Oklahoma)
• Jan 04 - Comet 222P/LINEAR Closest Approach To Earth (1.773 AU)
• Jan 04 - Apollo Asteroid 410777 (2009 FD) Closest Approach To Earth (0.750 AU)
• Jan 04 - Apollo Asteroid 3838 Epona Closest Approach To Earth (1.243 AU)
• Jan 04 - Asteroid 144633 Georgecarroll Closest Approach To Earth (1.305 AU)
• Jan 04 - Asteroid 4798 Mercator Closest Approach To Earth (1.425 AU)
• Jan 05 - Earth At Perihelion (0.983 AU From Sun)
• Jan 05 - Comet 300P/Catalina Closest Approach To Earth (2.862 AU)
• Jan 05 - Comet 73P-AA/Schwassmann-Wachmann At Opposition (3.735 AU)
• Jan 05 - Aten Asteroid 99942 Apophis Closest Approach To Earth (0.448 AU)
• Jan 05 - Apollo Asteroid 136617 (1994 CC) (2 Moons) Closest Approach To Earth (1.922 AU)
• Jan 05 - Kuiper Belt Object 2014 WP509 At Opposition (41.712 AU)
• Jan 05 - 15th Anniversary (2005), Mike Brown, et al's Discovery of Dwarf Planet Eris
• Jan 05 - 115th Anniversary (1905), Charles Perrine's Discovery of Jupiter Moon Elara
• Jan 06 - Comet 168P/Hergenrother At Opposition (1.277 AU)
• Jan 06 - Comet P/2015 J3 (NEOWISE) At Opposition (2.890 AU)
• Jan 06 - Asteroid 84882 Table Mountain Closest Approach To Earth (1.665 AU)
• Jan 06 - Asteroid 7392 Kowalski Closest Approach To Earth (1.739 AU)
• Jan 06 - Aten Asteroid 2014 BA3 Closest Approach To Earth (1.754 AU)
• Jan 06 - Asteroid 3834 Zappafrank Closest Approach To Earth (1.804 AU)
• Jan 06 - Asteroid 5799 Brewington Closest Approach To Earth (1.848 AU)
• Jan 06 - Asteroid 14702 Benclark Closest Approach To Earth (2.293 AU)
• Jan 06 - 5th Anniversary (2015), China Service Module, Moon Orbit Insertion
• Jan 06 - 35th Anniversary (1985), La Criolla Meteorite Fall (Hit House in Argentina)
• Jan 06 - Liisi Oterma's 105th Birthday (1915)
• Jan 06 - Jacques Etienne Montgolfier's 275th Birthday (1745)
• Jan 06 - Jacob Bernoulli's 365th Birthday (1655)
• Jan 06-08 - Workshop: Rocky Worlds - From the Solar System to Exoplanets, Cambridge, United Kingdom
• Jan 07 - Comet 130P/McNaught-Hughes At Opposition (3.460 AU)
• Jan 07 - Asteroid 7818 Muirhead Closest Approach To Earth (0.831 AU)
• Jan 07 - 35th Anniversary (1985), Sakigake Launch (Japan Comet Halley Mission
• Jan 07 - 410th Anniversary (1610), Galileo Galilei's Discovery of Jupiter's Moons Io, Europa, Ganymede & Callisto
• Jan 08 - Comet 137P/Shoemaker-Levy Closest Approach To Earth (2.748 AU)
• Jan 08 - Comet P/2015 F1 (PANSTARRS) Closest Approach To Earth (2.929 AU)
• Jan 08 - Asteroid 4523 MIT Closest Approach To Earth (1.522 AU)
• Jan 08 - Gyula Fenyi's 175th Birthday (1845)
• Jan 08 - 260th Anniversary (1760), Great Comet of 1760 Near-Earth Flyby (26.5 Lunar Distance)
• Jan 09 - Comet P/2016 P1 (PANSTARRS) At Opposition (2.573 AU)
• Jan 09 - Comet 86P/Wild At Opposition (3.442 AU)
• Jan 09 - Comet 73P-AF/Schwassmann-Wachmann At Opposition (3.509 AU)
• Jan 09 -[Apr 10] Atira Asteroid 413563 (2005 TG45) Closest Approach To Earth (0.532 AU)
• Jan 09 - Apollo Asteroid 161989 Cacus Closest Approach To Earth (1.581 AU)
• Jan 09 - Asteroid 10217 Richardcook Closest Approach To Earth (1.788 AU)
• Jan 09 - Asteroid 3933 Portugal Closest Approach To Earth (2.579 AU)
• Jan 09 - 30th Anniversary (1990), STS-32 Space Shuttle Columbia Launch (LDEF Satellite)
• Jan 10 - Penumbral Lunar Eclipse
• Jan 10 - Comet 73P-AW/Schwassmann-Wachmann At Opposition (3.547 AU)
• Jan 11 - Comet 289P/Blanpain Near-Earth Flyby (0.089 AU)
• Jan 11 - Comet P/2014 U2 (Kowalski) At Opposition (0.604 AU)
• Jan 11 - Comet 306P/LINEAR Closest Approach To Earth (2.113 AU)
• Jan 11 - Comet 243P/NEAT Closest Approach To Earth (2.788 AU)
• Jan 11 - Asteroid 1539 Borrelly Closest Approach To Earth (1.967 AU)
• Jan 11 - Kuiper Belt Object 230965 (2004 XA192) At Opposition (34.590 AU)
• Jan 12 - Comet 73P-AY/Schwassmann-Wachmann At Opposition (3.395 AU)
• Jan 12 - Comet 73P-AZ/Schwassmann-Wachmann At Opposition (3.397 AU)
• Jan 12 - Comet P/2013 YG46 (Spacewatch) At Opposition (3.793 AU)
• Jan 12 - Apollo Asteroid 4486 Mithra Closest Approach To Earth (1.315 AU)
• Jan 12 - Apollo Asteroid 3752 Camillo Closest Approach To Earth (1.552 AU)
• Jan 12 - Asteroid 101432 Adamwest Closest Approach To Earth (1.828 AU)
• Jan 12 - Asteroid 18499 Showalter Closest Approach To Earth (2.013 AU)
• Jan 12 - Asteroid 48300 Kronk Closest Approach To Earth (2.075 AU)
• Jan 12 - 15th Anniversary (2005), Deep Impact Delta 2 Launch
• Jan 12 - 110th Anniversary (1910), Discovery of the Great January Comet of 1910
• Jan 12 - Joseph Helffrich's 130th Birthday (1890)
• Jan 12 - Royal Astronomical Society's 200th Birthday (1820)
• Jan 13 - Comet 131P/Mueller Closest Approach To Earth (2.243 AU)
• Jan 13 - Comet P/2019 A3 (PANSTARRS) Closest Approach To Earth (2.478 AU)
• Jan 13 - Comet 371P/LINEAR-Skiff Closest Approach To Earth (2.944 AU)
• Jan 13 - Comet 359P/LONEOS At Opposition (4.034 AU)
• Jan 13 - Asteroid 2343 Siding Spring Closest Approach To Earth (1.380 AU)
• Jan 13 - Amor Asteroid 4957 Brucemurray Closest Approach To Earth (1.911 AU)
• Jan 13 - Asteroid 4446 Carolyn Closest Approach To Earth (4.089 AU)
• Jan 13 - 40th Anniversary (1980), Discovery of EETA 79001 (Mars Meteorite)
• Jan 13-17 - 7th International Conference on Mars Polar Science and Exploration, Ushuaia, Argentina
• Jan 13-17 - Conference: Geometry from the Quantum, Santa Barbarba, California
• Jan 14 - Comet 114P/Wiseman-Skiff Perihelion (1.579 AU)
• Jan 14 - Comet 218P/LINEAR At Opposition (1.882 AU)
• Jan 14 - Apollo Asteroid 38086 Beowulf Closest Approach To Earth (0.822 AU)
• Jan 14 - Amor Asteroid 3988 Huma Closest Approach To Earth (1.026 AU)
• Jan 14 - Asteroid 9957 Rafaellosanti Closest Approach To Earth (1.552 AU)
• Jan 14 - Asteroid 37530 Dancingangel Closest Approach To Earth (1.875 AU)
• Jan 14 - Asteroid 17062 Bardot Closest Approach To Earth (2.256 AU)
• Jan 14 - Asteroid 6639 Marchis Closest Approach To Earth (2.599 AU)
• Jan 14 - Amor Asteroid 5324 Lyapunov Closest Approach To Earth (3.591 AU)
• Jan 14 - 15th Anniversary (2005), Huygens Probe, Titan Landing
• Jan 14 - Arthur Holmes' 130th Birthday (1890)
• Jan 14-16 - 2nd IAA Conference on Space Situational Awareness (ICSSA), Washington DC
• Jan 15 - Aten Asteroid 2017 RZ15 Near-Earth Flyby (0.031 AU)
• Jan 15 - Aten Asteroid 2011 EP51 Near-Earth Flyby (0.050 AU)
• Jan 15 - Asteroid 246913 Slocum Closest Approach To Earth (1.572 AU)
• Jan 15 - Asteroid 11356 Chuckjones Closest Approach To Earth (1.945 AU)
• Jan 15 - Amor Asteroid 6456 Golombek Closest Approach To Earth (2.098 AU)
• Jan 15 - Warren De la Rue's 205th Birthday (1815)
• Jan 16 - Comet C/2018 R3 (Lemmon) Closest Approach To Earth (2.741 AU)
• Jan 16 - Comet 300P/Catalina At Opposition (2.884 AU)
• Jan 16 - Comet 189P/NEAT At Opposition (3.699 AU)
• Jan 16 - Asteroid 9000 Hal Closest Approach to Earth (1.710 AU)
• Jan 16 - Asteroid 18932 Robinhood Closest Approach To Earth (1.892 AU)
• Jan 16 - Asteroid 10387 Bepicolombo Closest Approach To Earth (2.078 AU)
• Jan 16 - Asteroid 88705 Potato Closest Approach To Earth (2.206 AU)
• Jan 16 - Asteroid 767 Bondia Closest Approach To Earth (2.441 AU)
• Jan 16 - Asteroid 87 Sylvia (2 Moons) Closest Approach To Earth (2.746 AU)
• Jan 17 - Comet 321P/SOHO Perihelion (0.049 AU)
• Jan 17 - Comet P/2016 P1 (PANSTARRS) Closest Approach To Earth (2.564 AU)
• Jan 17 - Comet 213P-B/Van Ness At Opposition (3.526 AU)
• Jan 17 - Comet 213P/Van Ness At Opposition (3.527 AU)
• Jan 17 - Comet P/2018 V5 (Trujillo-Sheppard) Closest Approach To Earth (4.371 AU)
• Jan 17 - Asteroid 1772 GagarinClosest Approach To Earth (1.427 AU)
• Jan 17 - Amor Asteroid 13553 Masaakikoyama Closest Approach To Earth (2.213 AU)
• Jan 17 - Amor Asteroid 1916 Boreas Closest Approach To Earth (2.217 AU)
• Jan 17 - Asteroid 1258 Sicilia Closest Approach To Earth (2.221 AU)
• Jan 17 - Centaur Object 52975 Cyllarus At Opposition (27.389 AU)
• Jan 18 - Comet 223P/Skiff At Opposition (2.476 AU)
• Jan 18 - Comet 340P/Boattini At Opposition (4.183 AU)
• Jan 18 - Aten Asteroid 2009 BH2 Near-Earth Flyby (0.037 AU)
• Jan 18 - Asteroid 11365 NASA Closest Approach To Earth (1.067 AU)
• Jan 18 - Asteroid 11926 Orinoco Closest Approach To Earth (1.520 AU)
• Jan 18 - Asteroid 2933 Amber Closest Approach To Earth (1.709 AU)
• Jan 18 - Asteroid 1996 Adams Closest Approach To Earth (1.771 AU)
• Jan 18 - 10th Anniversary (2010), Lorton Meteorite Fall (Hit Doctor's Office in Virginia)
• Jan 18 - 20th Anniversary (2000), Tagish Lake Meteorite Shower in Canada
• Jan 18 - Paul Ehrenfest's 140th Birthday (1880)
• Jan 19 - Comet 101P/Chernykh Perihelion (2.346 AU)
• Jan 19 - Comet P/2015 J3 (NEOWISE) Closest Approach To Earth (2.863 AU)
• Jan 19 - Asteroid 9880 Stegosaurus Closest Approach To Earth (1.120 AU)
• Jan 19 - Asteroid 44016 Jimmypage Closest Approach To Earth (1.295 AU)
• Jan 19 - Asteroid 3259 Brownlee Closest Approach To Earth (2.111 AU)
• Jan 19 - Asteroid 11247 Wilburwright Closest Approach To Earth (2.573 AU)
• Jan 19 - Asteroid 3581 Alvarez Closest Approach To Earth (2.915 AU)
• Jan 19 - 15th Anniversary (2005), Mars Rover Opportunity's Discovery of 1st Meteorite on Mars (Heat Shield Rock)
• Jan 19 - 55th Anniversary (1965), Gemini 2 launch (Unmanned Suborbital Flight)
• Jan 19-24 - Gordon Research Conference: Origins of Life, Galveston, Texas
• Jan 20 - Comet 7P/Pons-Winnecke At Opposition (3.239 AU)
• Jan 20 - Asteroid 1862 Apollo Closest Approach To Earth (1.348 AU)
• Jan 20 - Asteroid 22739 Sikhote-Alin Closest Approach To Earth (1.829 AU)
• Jan 20 - Asteroid 8991 Solidarity Closest Approach To Earth (2.028 AU)
• Jan 20 - Asteroid 5223 McSween Closest Approach To Earth (2.438 AU)
• Jan 20 - Asteroid 15783 Briancox Closest Approach To Earth (3.683 AU)
• Jan 20 - Buzz Aldrin's 90th Birthday (1930)
• Jan 20 - Andre-Marie Ampere's 245th Birthday (1775)
• Jan 20-22 - Workshop: Ice Giants Systems 2020, London, United Kingdom
• Jan 21 - Comet 243P/NEAT At Opposition (2.803 AU)
• Jan 21 - Comet 221P/LINEAR At Opposition (3.565 AU)
• Jan 21 - Atira Asteroid 2017 YH Closest Approach To Earth (0.144 AU)
• Jan 21 - Asteroid 51826 Kalpanachawla Closest Approach To Earth (1.951 AU)
• Jan 21 - Asteroid 8209 Toscanelli Closest Approach To Earth (1.956 AU)
• Jan 21 - 60th Anniversary (1960), Little Joe Launch 1B (Miss Sam Monkey)
• Jan 21 - George Van Biesbroeck's 140th Birthday (1880)
• Jan 22 - Asteroid 8249 Gershwin Closest Approach To Earth (1.212 AU)
• Jan 22 - Asteroid 149244 Kriegh Closest Approach To Earth (1.301 AU)
• Jan 22 - Asteroid 12373 Lancearmstrong Closest Approach To Earth (1.701 AU)
• Jan 22 - Apollo Asteroid 12923 Zephyr Closest Approch To Earth (1.893 AU)
• Jan 22 - Asteroid 5661 Hildebrand Closest Approach To Earth (3.855 AU)
• Jan 22 - 110th Anniversary (1910), Vigarano Meteorite Fall in Italy
• Jan 22 - Freidrich Paschen's 155th Birthday (1865)
• Jan 23 - Comet 306P/LINEAR Perihelion (1.270 AU)
• Jan 23 - Comet 78P/Gehrels Closest Approach To Earth (2.044 AU)
• Jan 23 - Comet P/2019 A3 (PANSTARRS) At Opposition (2.491 AU)
• Jan 23 - Comet 131P/Mueller At Opposition (2.793 AU)
• Jan 23 - Asteroid 13743 Rivkin Closest Approach To Earth (1.566 AU)
• Jan 23 - Asteroid 3106 Morabito Closest Approach To Earth (1.832 AU)
• Jan 23 - Asteroid 9025 Polansky Closest Approach To Earth (2.732 AU)
• Jan 23 - Asteroid 30441 Curly Closest Approach To Earth (2.585 AU)
• Jan 23 - Bill Progue's 90th Birthday (1930)
• Jan 23 - 150th Anniversary (1870), Nedagolla Meteorite Fall in India
• Jan 23 - Ernst Abbe's 180th Birthday (1840)
• Jan 24 - Apollo Asteroid 4450 Pan Closest Approach To Earth (0.748 AU)
• Jan 24 - Asteroid 1125 China Closest Approach To Earth (1.483 AU)
• Jan 24 - Asteroid 1886 Lowell Closest Approach To Earth (2.075 AU)
• Jan 24 - Kuiper Belt Object 20000 Varuna At Opposition (42.993 AU)
• Jan 24 - 20th Anniversary (2000), Discovery of Dhofar 019 Meteorite (Mars Meteorite)
• Jan 24 - 30th Anniversary (1990), Hiten Launch (Japan Moon Orbiter)
• Jan 24 - 35th Anniversary (1985), STS-51-C Launch (Space Shuttle Discovery, DOD)
• Jan 25 - Chinese New Year
• Jan 25 - Comet P/2002 S7 (SOHO) Perihelion (0.049 AU)
• Jan 25 - Comet P/2002 S7 (SOHO) Closest Approach To Earth (0.937 AU)
• Jan 25 - Comet 137P/Shoemaker-Levy At Opposition (2.793 AU)
• Jan 25 - Comet C/2018 V4 (Africano) At Opposition (3.972 AU)
• Jan 25 - Comet P/2018 V5 (Trujillo-Sheppard) At Opposition (4.380 AU)
• Jan 25 - Asteroid 11195 Woomera Closest Approach To Earth (1.079 AU)
• Jan 25 - Asteroid 5382 McKay Closest Approach To Earth (1.530 AU)
• Jan 26 - Comet 22P/Kopff At Opposition (3.919 AU)
• Jan 26 - Asteroid 4766 Malin Closest Approach To Earth (1.315 AU)
• Jan 26 - Asteroid 5430 Luu Closest Approach To Earth (1.610 AU)
• Jan 26 - Asteroid 10867 Lima Closest Approach To Earth (1.612 AU)
• Jan 26 - Amor Asteroid 3551 Verenia Closest Approach To Earth (1.732 AU)
• Jan 26 - 15th Anniversary (2005), Mike Brown, et al's Discovery of Haumea Moon Hi'laka
• Jan 26 - 40th Anniversary (1980), Voyager 1 Confirms Saturn Moons Epimetheus & Janus are Co-orbitals
• Jan 27 - Venus Passes 0.07 Degrees From Neptune
• Jan 27 - Comet 371P/LINEAR-Skiff At Opposition (2.974 AU)
• Jan 27 - Comet 99P/Kowal At Opposition (4.526 AU)
• Jan 27 - Asteroid 50240 Cortina Closest Approach To Earth (1.298 AU)
• Jan 27 - Asteroid 96205 Ararat Closest Approach To Earth (1.594 AU)
• Jan 27 - Asteroid 249516 Aretha Closest Approach To Earth (2.013 AU)
• Jan 27 - Plutino 208996 (2003 AZ84) At Opposition (43.378 AU)
• Jan 27 - 200th Anniversary (1820), 1st Sighting of Antarctica Main Land Mass
• Jan 27-30 - 66th Reliability and Maintainability Symposium (RAMS 2020), Palm Springs, California
• Jan 27-31 - Workshop: The Cosmic Web in the Local Universe, Leiden, The Netherlands
• Jan 27-31 - 2020 Sun-Climate Symposium, Tucson, Arizona
• Jan 28 - Comet 222P/LINEAR At Opposition (1.854 AU)
• Jan 28 - Comet 1P/Halley At Opposition (33.976 AU)
• Jan 28 - Asteroid 1896 Beer Closest Approach To Earth (1.640 AU)
• Jan 28 - Asteroid 508 Princetonia Closest Approach To Earth (2.228 AU)
• Jan 28 - Amor Asteroid 719 Albert Closest Approach To Earth (2.687 AU)
• Jan 28 - Gyorgy Kulin's 115th Birthday (1905)
• Jan 28-31 - 5th IAA Conference on University Satellite Missions and CubeSat Workshop, Rome, Italy
• Jan 29 - Comet 353P/McNaught At Opposition (3.973 AU)
• Jan 29 - Asteroid 6433 Enya Closest Approach To Earth (1.313 AU)
• Jan 29 - Uranus Trojan 2014 YX49 At Opposition (19.436 AU)
• Jan 29 - Lubos Kohoutek's 85th Birthday (1935)
• Jan 29 - Karl Heimberg's 110th Birthday (1910)
• Jan 29 - Philibert Jacques Melotte's 140th Birthday (1880)
• Jan 29 - Lawrence Hargrave's 170th Birthday (1850)
• Jan 30 - Comet 138P/Shoemaker-Levy Closest Approach To Earth (1.937 AU)
• Jan 30 - Comet P/2012 G1 (PANSTARRS) At Opposition (2.371 AU)
• Jan 30 - Comet P/2018 P3 (PANSTARRS) Closest Approach To Earth (2.530 AU)
• Jan 30 - Comet 258P/PANSTARRS At Opposition (2.547 AU)
• Jan 30 - Comet 368P/NEAT At Opposition (3.518 AU)
• Jan 30 - Apollo Asteroid 2018 AL12 Near-Earth Flyby (0.047 AU)
• Jan 30 - Asteroid 11083 Caracas Closest Approach To Earth (1.272 AU)
• Jan 30 - Asteroid 7816 Hanoi Closest Approach To Earth (1.309 AU)
• Jan 30 - Asteroid 3665 Fitzgerald Closest Approach To Earth (1.444 AU)
• Jan 30 - Asteroid 5811 Keck Closest Approach To Earth (2.386 AU)
• Jan 30 - Asteroid 73511 Lovas Closest Approach To Earth (2.437 AU)
• Jan 30 - Asteroid 2688 Halley Closest Approach To Earth (2.590 AU)
• Jan 31 - Comet 101P-B/Chernykh Perihelion (2.350 AU)
• Jan 31 - Asteroid 13513 Manilla Closest Approach To Earth (1.230 AU)
• Jan 31 - Asteroid 38237 Roche Closest Approach To Earth (1.413 AU)
• Jan 31 - 5th Anniversary (2015), SMAP Launch
• Jan 31 - Dan Milisavljevic's 40th Birthday (1980)