&sq=Envato&lang=en&file=File:AS15-88-11986.jpg) Lunar crater Alden from Apollo 15. NASA image. | |
| Coordinates | 23°36′S 110°48′E / 23.6°S 110.8°E |
|---|---|
| Diameter | 104 km |
| Depth | Unknown |
| Colongitude | 250° at sunrise |
| Eponym | Harold Alden |
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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.