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AAT Images of Fragment GHLQ12R, EFGHLQ12R, ACEFHP2 Impacts


AAT images 21 July

Anglo-Australian Telescope Infra-red images from July 21. The image consists of three panels taken at 6:01pm (upper), 6:51:pm (middle) and 10:08pm (lower)(Aust Eastern Std time) with the IRIS Infra-red Imaging Spectrograph on the 3.9m Anglo-Australian Telescope at Siding Spring Observatory near Coonabarabran in north-west NSW. The observing team is led by Dr. David Crisp from the Jet Propulsion Laboratory in Pasadena. In the upper panel, impact sites from fragments H, Q1, Q2 and R, (the latter of which had hit Jupiter some three hours earlier), G and L are visible (left to right). The large disturbed regions from fragments G and L are particularly prominent. In the upper part of this picture, the Jovian moon Io is passing in front of the planet. In the middle panel, the impact regions visible are (again left to right) E+F, H, Q1, Q2+R, G and L. Jupiter's Great Red Spot can be seen on the extreme left at a latitude above the impact regions. The moon Io continues to pass in front of the planet. In the bottom panel, Jupiter has rotated so that the Red Spot is now on the extreme right of the image. Impact regions visible (left to right) are P2, C, A (from the first fragment which hit early Sunday morning AEST), E+F and H. The last fragment "W" will hit Jupiter at 6pm on Friday evening and the AAT will once again be well placed to observe the impact. The impact sites will continue to be studied for some months to monitor the evolution of the impact sites.

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