Ritter (crater)

Ritter is a lunar crater located near the southwest edge of Mare Tranquillitatis. It is the northwest member of a crater pair with Sabine crater to the southeast. The two rims are separated by a narrow valley only a couple of kilometers wide. To the northwest is the Dionysius crater, and to the north-northeast are the Manners and Arago craters.

This crater is roughly circular but with an irregular outer rim. The inner walls have slumped down toward the floor. The interior is irregular with several low ridges. To the northwest of Ritter crater is a system of parallel rilles designated Rimae Ritter. These follow a course to the northwest.

Satellite craters

By convention these features are identified on Lunar maps by placing the letter on the side of the crater mid-point that is closest to Ritter crater.