This is an eroded crater with several small craters along the rim edge. The rim is the most heavily worn at the northern end, but is more intact to the east and west. The interior floor is relatively level.
Prior to formal naming in 1970 by the IAU, this crater was known as Crater 230.
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 McMath.
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.