Delisle (crater)

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Crater characteristics
Delisle crater (above) and Diophantus (below) from Apollo 15. NASA photo.
Coordinates	29.9° N, 34.6° W
Diameter	25 km
Depth	2.6 km
Colongitude	35° at sunrise
Eponym	Joseph N. Delisle

Delisle is a small lunar crater in the western part of the Mare Imbrium. It lies to the north of the Diophantus crater, and just to the northwest of the ridge designated Mons Delisle. Between Delisle and Diophantus is a sinuous rille named Rima Diophantus, with a diameter of 150 km. To the northeast is another rille designated Rima Delisle, being named after this crater.

The rim of Delisle crater is somewhat polygonal in form and it has a low central rise on the floor. There is some slight slumping along the inner wall, but overall the rim is still relatively fresh with little appearance of significant wear. The outer rim is surrounded by a small rampart of hummocky terrain.

This formation has also been designated "De l'Isle" in some sources.

[edit] Rima Delisle

This is a sinuous rille centered on selenographic coordinates 31.0° N, 32.0° W. It occupies a maximum diameter of 60 km. Three tiny craters in the vicinity of this feature have been assigned names by the IAU. These are listed in the table below.

Crater	Longitude	Latitude	Diameter	Name source
Boris	30.6° N	33.5° W	4 km	Russian masculine name
Gaston	30.9° N	34.0° W	2 km	French masculine name
Linda	30.7° N	33.4° W	1 km	Spanish feminine name

[edit] Satellite craters

By convention these features are identified on lunar maps by placing the letter on the side of the crater mid-point that is closest to Delisle crater.