Tags: Crater.
Trumpler is a lunar crater on the far side of the Moon named after Robert Julius Trumpler. It lies just to the south of the crater Nušl and northwest of Freundlich. To the southwest is the heavily battered crater Tikhomirov.This is an old eroded crater with an outer rim that has been damaged in places by subsequent impacts especially along the southwestern section. The rim edge has been worn to the point where it is now poorly defined and forms an uneven ridge in the surface.