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Diophantus (crater)
Diophantus is a lunar impact crater that lies in the southwestern part of the Mare Imbrium. It forms a pair with the larger crater Delisle to the north. Diophantus has a wide inner wall and a low central rise. To the north of Diophantus is the sinuous rille designated Rima Diophantus, named after the crater. There is a tiny craterlet near the exterior of the southwest wall.
==Rima Diophantus==
This cleft follows a generally east–west path across the Mare Imbrium. It is centered at selenographic coordinates 31.0° N, 32.0° W, and has a maximum diameter of 150 km. Several tiny craters near this rille have been assigned names by the IAU. These are listed in the table below.
The crater Samir has bright rays that extend for over 70 km.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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