Crommelin is an ancient
lunar impact crater
An impact crater is a depression (geology), depression in the surface of a solid astronomical body formed by the hypervelocity impact event, impact of a smaller object. In contrast to volcanic craters, which result from explosion or internal c ...
that is located in the vicinity of the south pole of the
Moon
The Moon is Earth's only natural satellite. It Orbit of the Moon, orbits around Earth at Lunar distance, an average distance of (; about 30 times Earth diameter, Earth's diameter). The Moon rotation, rotates, with a rotation period (lunar ...
, on the
far side. It lies to the north of the large crater
Zeeman, and to the east-northeast of
Numerov.
This formation has been almost completely worn away by subsequent impacts, leaving little more than a crater-riddled depression in the surface. There is an equally worn crater lying across the northern rim, and Crommelin X is attached to the outward-bulging northwest perimeter. The largest of the craterlets within the interior form a pair near the southern rim. There is a slight central peak, consisting of little more than a low rise in the surface.
Satellite craters
By convention these features are identified on Lunar maps by placing the letter on the side of the crater midpoint that is closest to Crommelin.
References
*
*
*
*
*
*
*
*
*
*
*
*
{{Craters on the Moon: C-F
Impact craters on the Moon