Cassini A: the nature of the `Washbowl' described by Wilkins & Moore on 1952 April 3

摘要

Examination of Cassini A in Figures 1-4 reveals severalinteresting details. Cassini A is a double crater, as shown inFigures 1-2. The smaller eastern crater accounts for thestructure that Wilkins & Moore called the 'washbowl.'Moreover the wall separating the two craters is straight.This is different from the round rim drawn in the LunarAstronautical Chart (LAC map 25).3 We address the originof this feature below.