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Delambre (crater)
From Wikipedia, the free encyclopedia
| Crater characteristics | |
|---|---|
| Coordinates | 1.9° S, 17.5° E |
| Diameter | 52 km |
| Depth | 3.5 km |
| Colongitude | 342° at sunrise |
| Eponym | Jean B. J. Delambre |
Delambre is a lunar impact crater that lies to the southwest of Mare Tranquillitatis, in the central highland region. To the west are the crater pair of Theon Junior and Theon Senior, the later being more distant and located to the northwest. It is 52 kilometers in diameter 3.5 kilometers in depth. It was named for Jean Baptiste Joseph Delambre, an 18th century French astronomer.[1]
The rim of Delambre has a terraced interior, with a tiny craterlet lying along the northern rim. In the south is a low cut forming a slight notch. The crater interior has an irregular surface. It has high walls, with some peaks reaching 15,000 feet. Delambre was the landing site of the unmanned probe Ranger 8, which took photographs of the crater. Delambre is from the Upper Imbrian epoch, which lasted from 3.8 to 3.2 billion years ago.[2][1]
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 Delambre crater.[3]
| Delambre | Latitude | Longitude | Diameter |
|---|---|---|---|
| B | 1.7° S | 19.6° E | 10 km |
| D | 1.1° S | 17.6° E | 5 km |
| F | 1.0° S | 19.3° E | 5 km |
| H | 1.0° S | 16.4° E | 16 km |
| J | 0.3° S | 16.8° E | 12 km |
- ^ a b Autostar Suite Astronomer Edition. CD-ROM. Meade, April 2006.
- ^ Moore, Patrick (2001). On the Moon. Sterling Publishing Co.. ISBN 0-304-35469-4.
- ^ Bussey, B.; Spudis, P., (2004). The Clementine Atlas of the Moon. New York: Cambridge University Press. ISBN 0-521-81528-2.