Viviani is a small lunarimpact crater that lies on the far side of the Moon. It was named after Italian mathematician and physicist Vincenzo Viviani.[1] It is located due west of the prominent crater King, and just to the southeast of Katchalsky.
This is a roughly circular, bowl-shaped crater with a well-defined rim edge and an inner wall that is wider along the southeastern half. A small crater has cut into the southern rim edge, and another small crater is attached to the exterior along the east. The inner walls are simple slopes that run down to the relatively level and featureless floor.
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 Reviews12 (2): 136–186. doi:10.1007/BF00171763. Bibcode: 1971SSRv...12..136M.