Naonobu - of the trio Atwood-Bilharz-Naonobu NW of Langrenus
(formerly Langrenus B)
Lat: 4.6°S, Long: 57.8°E, Diam: 34 km, Depth: 1.87 km, Rükl: 49
LO-IV-184H The other IAU-named features in this field are Acosta and Atwood. The large crater whose rim protudes in the lower right is Langrenus.
Bilharz (the unseen third member of the trio Atwood-Bilharz-Naonobu) is off-screen at the frame's left margin.
Depth data from Kurt Fisher database
- Westfall, 2000: 1.87 km
- Named for Ajima Naonobu (c. 1732-1798), a Japanese mathematician.
- This name was provisionally introduced on LTO-80A3 (April 1974). It was approved in IAU Transactions XVIB (1976).