Alden (crater)

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Lunar crater Alden from Apollo 15. NASA image.
Coordinates23°36′S 110°48′E / 23.6°S 110.8°E / -23.6; 110.8Coordinates: 23°36′S 110°48′E / 23.6°S 110.8°E / -23.6; 110.8
Diameter104 km
Colongitude250° at sunrise
EponymHarold Alden
Lunar Orbiter 3 image, facing southeast

Alden is a lunar impact crater that lies on the far side of the Moon, between Hilbert to the north-northwest and Milne to the south-southeast. To the south-southwest lies Scaliger.

Alden has a low rim that is overlain in the north and northeast by Alden C and the smaller Alden E. The rim is worn and eroded, especially along the southern wall. The floor is somewhat irregular and pitted. The small crater Alden V lies just inside the north rim, and is attached to Alden C to the east.

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 Alden.

Alden Latitude Longitude Diameter
B 20.5° S 112.6° E 17 km
C 22.5° S 111.4° E 50 km
E 23.2° S 112.4° E 28 km
V 22.5° S 110.1° E 19 km


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