This crater formation has been heavily worn and eroded by impact erosion. Little remains of the original rim, although its form can still be traced across the surface. Multiple small craters lie across the rim and inner wall, leaving a ring-shaped formation of ridges in the lunar terrain. The interior floor is slightly less rough than the surrounding surface, with a cluster of small craterlets near the northeast inner wall.
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 Cooper.
Cooper
Latitude
Longitude
Diameter
G
52.6° N
178.5° E
20 km
K
51.1° N
178.1° E
30 km
References
Andersson, L. E.; Whitaker, E. A. (1982). NASA Catalogue of Lunar Nomenclature. NASA RP-1097.
Menzel, D. H.; Minnaert, M.; Levin, B.; Dollfus, A.; Bell, B. (1971). "Report on Lunar Nomenclature by the Working Group of Commission 17 of the IAU". Space Science Reviews. 12 (2): 136–186. Bibcode:1971SSRv...12..136M. doi:10.1007/BF00171763. S2CID122125855.