This is a moderately eroded crater, with the satellite crater Nagaoka W overlapping the northwestern rim. The remainder of the rim remains well-defined, although it is overlain by several tiny craters. The inner wall has slumped in places, forming terrace-like shelves. A few small craters lie within the crater interior.
The crater was named after Japanese physicist Hantaro Nagaoka by the IAU in 1970.[1]
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 Nagaoka.
Nagaoka
Latitude
Longitude
Diameter
U
19.9° N
151.4° E
30 km
W
20.0° N
153.0° E
29 km
References
^"Nagaoka". Gazetteer of Planetary Nomenclature. NASA/USGS. Retrieved 27 March 2022.
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.