The South-West Libration Zone Home

This is the full-sized picture from 16 December 2022.  Use your back button to return to the main page.

Move your mouse over the picture to see the names of the various craters.   The colour of the label has no significance; I use black if the name is in a bright area where white would not show up well.  In this case Byrgius is an ancient crater that is difficult to see whereas Byrgius A is a young crater with a bright ejecta blanket.
This picture illustrates an ongoing problem for the lunar cartographer of the renaming of some of the lettered craters which is being undertaken by the IAU.  The two small craters Pingre L and Pingre M are much closer to Yakovkin than they are to Pingre, so one wonders why they are not Yakovkin A and B.  The reason is that the crater was called Pingre H until it was renamed Yakovkin after a Russian astronomer, Avenir Aleksandrovich Yakovkin (1887-1974) who was director of the Observatory at Kazan University from 1928 to 1931

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