Coblentz (lunar crater)
Encyclopedia
Coblentz is a small lunar impact crater
Impact crater
In the broadest sense, the term impact crater can be applied to any depression, natural or manmade, resulting from the high velocity impact of a projectile with a larger body...

 that is located on the far side of the Moon
Moon
The Moon is Earth's only known natural satellite,There are a number of near-Earth asteroids including 3753 Cruithne that are co-orbital with Earth: their orbits bring them close to Earth for periods of time but then alter in the long term . These are quasi-satellites and not true moons. For more...

, to the south of the much larger crater Bolyai
Bolyai (crater)
Bolyai is an old lunar crater that is located in the southern hemisphere on the far side of the Moon. To the southeast of Bolyai is the crater Eötvös, and to the north is Neujmin....

. This crater retains a circular rim, but it has been worn by impact erosion. This is particularly so at the southern end where an irregular gap exists in the rim. The interior floor is relatively featureless save for several tiny craterlets.

A ridge arcs from the northwest rim of Coblentz to join the southern rim of Bolyai. There are several patches of dark (low albedo
Albedo
Albedo , or reflection coefficient, is the diffuse reflectivity or reflecting power of a surface. It is defined as the ratio of reflected radiation from the surface to incident radiation upon it...

) material just to the south and southwest of Coblentz.
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