Endymion (crater)
Endymion is a lunar impact crater that lies near the northeast limb of the Moon. It is located to the east of Mare Frigoris, and north of the Lacus Temporis. To the southwest is the somewhat smaller crater Atlas. Because of its location, Endymion has an oval appearance from foreshortening. Beyond the crater along the lunar limb is the Mare Humboldtianum.
 Lunar Orbiter 4 image | |
| Coordinates | 53.6°N 56.5°E |
|---|---|
| Diameter | 125 km |
| Depth | 2.6 km |
| Colongitude | 306° at sunrise |
| Eponym | Endymion |
The floor of Endymion has been covered in low-albedo lava that gives it a dark appearance and makes it relatively easy to locate. The floor is relatively smooth, with only a few craterlets located within the rim. A string of three lie near the northwestern inner wall. There is a wrinkle ridge crossing the crater floor, and near the center is a low, eroded hill that may be the summit of a central peak that is now almost completely submerged by lava. Faint streaks of ray material from Thales to the north-northwest crosses the dark floor. The outer rampart is low, wide, and worn from impact erosion.
Satellite craters
By convention these features are identified on lunar maps by placing the letter on the side of the crater midpoint that is closest to Endymion.
| Endymion | Latitude | Longitude | Diameter |
|---|---|---|---|
| A | 54.7° N | 62.8° E | 30 km |
| B | 59.8° N | 67.2° E | 59 km |
| C | 58.4° N | 60.8° E | 32 km |
| D | 52.4° N | 62.4° E | 20 km |
| E | 53.6° N | 66.2° E | 18 km |
| F | 56.9° N | 65.1° E | 12 km |
| G | 56.4° N | 55.6° E | 15 km |
| H | 51.1° N | 56.3° E | 14 km |
| J | 53.5° N | 50.7° E | 67 km |
| K | 51.3° N | 52.3° E | 7 km |
| L | 55.4° N | 71.0° E | 9 km |
| M | 52.7° N | 70.9° E | 9 km |
| N | 52.4° N | 69.6° E | 9 km |
| W | 52.7° N | 69.2° E | 10 km |
| X | 52.9° N | 50.1° E | 6 km |
| Y | 55.8° N | 58.0° E | 8 km |
Oblique view of Endymion B from Lunar Orbiter 4
References
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- McDowell, Jonathan (July 15, 2007). "Lunar Nomenclature". Jonathan's Space Report. Retrieved 2007-10-24.CS1 maint: ref=harv (link)
- Menzel, D. H.; Minnaert, M.; Levin, B.; Dollfus, A.; Bell, B. (1971). "Report on Lunar Nomenclature by the Working Group of Commission 17 of the IAU". Space Science Reviews. 12 (2): 136–186. Bibcode:1971SSRv...12..136M. doi:10.1007/BF00171763.CS1 maint: ref=harv (link)
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- Webb, Rev. T. W. (1962). Celestial Objects for Common Telescopes (6th revised ed.). Dover. ISBN 978-0-486-20917-3.CS1 maint: ref=harv (link)
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