Römer (crater)
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| Crater characteristics | |
| Coordinates | 25.4° N, 36.4° E |
|---|---|
| Diameter | 40 km |
| Depth | 3.3 km |
| Colongitude | 324° at sunrise |
| Eponym | Ole Rømer |
Römer is a lunar impact crater that is located to the north of the Sinus Amoris in the northeast section of the Moon. It lies in the southwest part of the mountainous region named the Montes Taurus. To the west-northwest is the crater-bay Le Monier, on the east edge of Mare Serenitatis.
The rim of Römer has relatively high walls with a terraced inner surface. There is a small craterlet on the north part of the floor, and a large central peak at the mid-point.
To the northwest of the crater is a prominent system of rilles named the Rimae Römer. These follow a course to the north from the west rim of the crater, and have a combined length of about 110 kilometres.
[edit] Satellite craters
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 Römer crater.
| Römer | Latitude | Longitude | Diameter |
|---|---|---|---|
| A | 28.1° N | 37.1° E | 35 km |
| B | 28.6° N | 38.2° E | 20 km |
| C | 27.7° N | 37.0° E | 8 km |
| D | 24.5° N | 35.8° E | 13 km |
| E | 28.5° N | 39.2° E | 31 km |
| F | 27.1° N | 37.2° E | 22 km |
| G | 26.8° N | 36.2° E | 14 km |
| H | 25.9° N | 35.7° E | 6 km |
| J | 22.4° N | 37.9° E | 8 km |
| M | 25.3° N | 34.6° E | 10 km |
| N | 25.3° N | 38.0° E | 26 km |
| P | 26.5° N | 39.6° E | 61 km |
| R | 24.2° N | 34.6° E | 42 km |
| S | 24.9° N | 36.8° E | 44 km |
| T | 23.6° N | 36.1° E | 47 km |
| U | 24.3° N | 39.1° E | 28 km |
| V | 24.5° N | 38.6° E | 28 km |
| W | 26.4° N | 40.4° E | 7 km |
| X | 24.3° N | 40.1° E | 22 km |
| Y | 25.7° N | 36.3° E | 7 km |
| Z | 24.1° N | 36.9° E | 12 km |
The following craters have been renamed by the IAU.
- Römer K — See Franck crater.
- Römer L — See Brewster crater.
Römer A is unofficially named Stephanides crater, after Greek scientist and poet Theodore Stephanides.
[edit] References
- Andersson, L. E.; Whitaker, E. A., (1982). NASA Catalogue of Lunar Nomenclature. NASA RP-1097.
- Blue, Jennifer (July 25, 2007). Gazetteer of Planetary Nomenclature. USGS. Retrieved on 2007-08-05.
- Bussey, B.; Spudis, P. (2004). The Clementine Atlas of the Moon. New York: Cambridge University Press. ISBN 0-521-81528-2.
- Cocks, Elijah E.; Cocks, Josiah C. (1995). Who's Who on the Moon: A Biographical Dictionary of Lunar Nomenclature. Tudor Publishers. ISBN 0-936389-27-3.
- McDowell, Jonathan (July 15, 2007). Lunar Nomenclature. Jonathan's Space Report. Retrieved on 2007-10-24.
- 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: 136.
- Moore, Patrick (2001). On the Moon. Sterling Publishing Co.. ISBN 0-304-35469-4.
- Price, Fred W. (1988). The Moon Observer's Handbook. Cambridge University Press. ISBN 0521335000.
- Rükl, Antonín (1990). Atlas of the Moon. Kalmbach Books. ISBN 0-913135-17-8.
- Webb, Rev. T. W. (1962). Celestial Objects for Common Telescopes, 6th revision, Dover. ISBN 0-486-20917-2.
- Whitaker, Ewen A. (1999). Mapping and Naming the Moon. Cambridge University Press. ISBN 0-521-62248-4.
- Wlasuk, Peter T. (2000). Observing the Moon. Springer. ISBN 1852331933.
