January 20, 2011

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A Basin or Just a Big Crater?

LPOD-Jan20-11.jpg

image by Павел Пресняков (Pavel Presnyakov), Kiev Ukraine

Have you ever observed Bailly? Its a big crater just on the western limb. It isn't very deep (maybe; there isn't a reliable modern measurement) for its original floor appears to be at least partially filled in, presumably with Orientale's ejecta. There is no evidence of a central peak, but it might not be unusual because at about 290 km diameter, Bailly is big enough to be a two-ring basin. Bill Hartmann and I thought it was 40 years ago, and Pavel's great image and the new overhead Chuck Wood

Technical Details
11-11-08, 16:33 UT. 350 mm newtonian + barlow 5x Vac-135, b/w 1280x1024 500 in Registax 6 alpha

Related Links
Rükl plate 71
Pavel's new website

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