D'Arrest (crater)

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D'Arrest crater 4090 h1.jpg
Coordinates 2°18′N 14°42′E / 2.3°N 14.7°E / 2.3; 14.7Coordinates: 2°18′N 14°42′E / 2.3°N 14.7°E / 2.3; 14.7
Diameter 30 km
Depth 1.5 km
Colongitude 344° at sunrise
Eponym Heinrich d'Arrest

D'Arrest is a lunar crater that is located in the lava-flooded region to the west of the Mare Tranquillitatis. It lies to the southeast of the crater Agrippa and northwest of Delambre. Just to the northeast are the small, bowl-shaped craters De Morgan and Cayley.

The outer rim of D'Arrest is broken in several places, with a gash at the south end and a wide gap to the northeast where only a low ridge remains in place of the original wall. The interior has been resurfaced by lava, leaving a nearly flat, featureless floor. The surviving rim is low and worn, with ridges connecting it to the south and southwest.

Satellite craters[edit]

By convention these features are identified on lunar maps by placing the letter on the side of the crater midpoint that is closest to D'Arrest.

D'Arrest Latitude Longitude Diameter
A 1.9° N 13.7° E 4 km
B 1.0° N 13.6° E 5 km
M 1.9° N 13.6° E 23 km
R 0.5° N 15.6° E 19 km