 Lunar Orbiter 4 image | |
| Coordinates | 21°54′N 5°00′E / 21.9°N 5.0°E / 21.9; 5.0 |
|---|---|
| Diameter | 9.18 km (5.70 mi)[1] |
| Depth | 1.6 km (0.99 mi) |
| Colongitude | 355° at sunrise |
| Eponym | Claudius Galen |
Galen is a small lunar impact crater that lies in the rugged region between the Montes Apenninus range to the west and the Montes Haemus in the east. It is located to the south-southeast of the crater Aratus, a slightly larger formation. Further to the west is the crater Conon, near the flanks of the Montes Apeninnus.[2]
Galen is a circular crater with a bowl-shaped interior and a sharp rim that has not undergone significant erosion. The small interior floor has a lower albedo than the surrounding walls.[3]
The crater is named after ancient Greek doctor Claudius Galen (c. 129-200).[1] It was previously identified as Aratus A,[4] before its designation was approved by the IAU in 1973.[1]
References
- "Galen". Gazetteer of Planetary Nomenclature. USGS Astrogeology Research Program. Retrieved 2026-10-04.
- "LAC 41" (PDF). Gazeteer of Planetary Nomenclature. Retrieved 2026-10-04.
- Bussey, B.; Spudis, P. (2004). The Clementine Atlas of the Moon. New York: Cambridge University Press. p. 41. ISBN 978-0-521-81528-4.
- Moore, Patrick; Rees, Robin (2014). Patrick Moore's Data Book of Astronomy (2 ed.). Cambridge University Press. p. 60. ISBN 978-1-139-49522-6.
Sources
- Rükl, Antonín (1990). Atlas of the Moon. Kalmbach Books. ISBN 978-0-913135-17-4.
- Wlasuk, Peter T. (2000). Observing the Moon. Springer. ISBN 978-1-85233-193-1.
External links
- LTO-41C2 Galen — L&PI topographic map