Maskelyne (crater)

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Maskelyne crater as10-34-5151.jpg
Apollo 10 Hasselblad Camera image
Coordinates 2°12′N 30°06′E / 2.2°N 30.1°E / 2.2; 30.1Coordinates: 2°12′N 30°06′E / 2.2°N 30.1°E / 2.2; 30.1
Diameter 24 km
Depth 2.5 km
Colongitude 330° at sunrise
Eponym Nevil Maskelyne
Oblique view of Maskelyne from Apollo 10

Maskelyne is a solitary lunar crater that lies in the southeast part of the Mare Tranquillitatis and is named. The outer rim has a somewhat polygonal shape, although it is generally circular. The inner walls are terraced and there is a low central rise at the midpoint of the floor.

Its diameter is 24 km long and is 2,500 meters deep. The area is around 450 km² and the perimeter is about 75 km.

The landing site of the Apollo 11 expedition is located about 250 kilometers to the west-southwest. To the northeast are Wallach and Aryabhata, under 150 km west is the ghost crater Lamont, and to the southeast is the bright Censorinus. To the south are the lunar mountains informally known as Duke Island and Boot Hill, also in that location about 50 km is the equator.

From that location the Earth would appear in the lunar sky at over 30 degrees from the top towards the west and 2 degrees to the left.

Satellite craters[edit]

Oblique view facing west from Apollo 11, showing Maskelyne at center, with Maskelyne B above center, Maskelyne G near top center, Maskelyne X and Y in upper left, and Maskelyne K at right.

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

Maskelyne Latitude Longitude Diameter
A 0.1° N 34.0° E 29 km
B 2.0° N 28.9° E 9 km
C 1.1° N 32.7° E 9 km
D 2.5° N 32.5° E 33 km
F 4.2° N 35.3° E 21 km
G 2.4° N 26.7° E 6 km
J 3.2° N 32.7° E 4 km
K 3.3° N 29.6° E 5 km
M 7.8° N 27.9° E 8 km
N 5.4° N 30.3° E 5 km
P 0.5° N 34.1° E 10 km
R 3.0° N 31.3° E 13 km
T 0.0° S 36.6° E 5 km
W 0.9° N 29.2° E 4 km
X 1.3° N 27.4° E 4 km
Y 1.8° N 28.1° E 4 km

The following craters have been renamed by the IAU.

Satellite craters of Maskelyne


External links[edit]