Mairan (crater)

Mairan (crater)
Mairan (crater)
Coordinates 41°36′N 43°24′W / 41.6°N 43.4°W / 41.6; -43.4Coordinates: 41°36′N 43°24′W / 41.6°N 43.4°W / 41.6; -43.4
Diameter 40 km
Depth 3.4 km
Colongitude 44° at sunrise
Eponym Jean J. d'Ortous
de Mairan

Mairan is a lunar impact crater that is located on a highland peninsula between Oceanus Procellarum to the west and Mare Imbrium to the east. To the north-northeast is the comparably sized crater Sharp. Northwest of Mairan is the heavily eroded Louville.

The outer rim of Mairan has not been significantly eroded or impacted, and retains a sharp edge. The surface around Mairan is rough and irregular, with a multitude of many tiny craters, particularly to the south and west. The inner walls display some terracing, and flow down to a relatively flat interior floor.

In the mare due west of Mairan is a small lunar dome designated Mairan T. The dome has a tiny crater at the summit. There is also a sinuous rille along the southwest edge of the highland peninsula containing Mairan. It is designated Rima Mairan, and follows a north–south course for a length of about 100 kilometers.

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 Mairan.

Mairan Latitude Longitude Diameter
A 38.6° N 38.8° W 16 km
C 38.6° N 46.0° W 7 km
D 40.9° N 45.4° W 10 km
E 37.8° N 37.2° W 6 km
F 40.3° N 45.1° W 9 km
G 40.9° N 50.8° W 6 km
H 39.3° N 40.0° W 5 km
K 40.8° N 41.0° W 6 km
L 39.0° N 43.2° W 6 km
N 39.2° N 45.5° W 6 km
T 41.7° N 48.3° W 3 km
Y 42.7° N 44.0° W 7 km

References


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