Smithson is a small lunarimpact crater located in the northeast part of Mare Fecunditatis. It is a circular, cup-shaped feature with a slightly higher albedo than the surrounding, dark lunar mare. It was previously identified as Taruntius N before being renamed by the IAU. Taruntius itself lies to the west-northwest, in the northwestern part of the same mare.
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.