[crater] This formation has been significantly eroded and degraded with the passage of time, leaving a low, irregular rim that has been reshaped by subsequent impacts. The rim has a notable bulge to the northeast, and a lesser bulge along the southern rim. The later remains as an imprint of a ghost crater in the surface that overlies the so...
Found on
http://en.wikipedia.org/wiki/Desargues_(crater)

1593–1662, French mathematician.
Found on
https://www.infoplease.com/dictionary/desargues
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