Tags: Crater.
Naonobu is a small lunar impact crater named after Japanese mathematician Ajima Naonobu. It is located on the eastern Mare Fecunditatis to the northwest of the prominent crater Langrenus and it forms a triple-crater formation with the adjacent Atwood to the south and Bilharz just to the southwest. Naonobu and Atwood are separated by only a few kilometres.The interior of this crater has been flooded with basaltic lava leaving a relatively flat interior and a reduced outer rim.