Regiomontanus (crater)
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| Crater characteristics | |
| Coordinates | 28.4° S, 1.0° W |
|---|---|
| Diameter | 126 × 110 km |
| Depth | 1.7 km |
| Colongitude | 2° at sunrise |
| Eponym | Johannes M. von Königsberg |
Regiomontanus is an ancient lunar impact crater located in the southern highlands region to the southeast of Mare Nubium. It is joined at the chaotic northern rim by Purbach crater, and to the south-southeast is Walther crater.
The crater is heavily worn from impact erosion, and the rim is irregular, mountainous and distinctly oval in outline. The walls on the south and west edges have been almost completely degraded. A prominent ridge lies off center to the northwest, with the small crater 'Regiomontanus A' at its summit. The crater floor is lava-flooded, and has a number of small crater impacts.
The summit crater 'Regiomontanus A' was once considered proof of volcanic activity on the Moon. However this feature is actually an impact crater, and is offset slightly from the summit of the central peak.
[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 Regiomontanus crater.
| Regiomontanus | Latitude | Longitude | Diameter |
|---|---|---|---|
| A | 28.0° S | 0.6° W | 6 km |
| B | 29.0° S | 3.7° W | 10 km |
| C | 28.7° S | 5.2° W | 8 km |
| E | 28.2° S | 6.2° W | 6 km |
| F | 27.8° S | 1.9° W | 11 km |
| G | 28.2° S | 3.6° W | 5 km |
| H | 28.6° S | 4.0° W | 6 km |
| J | 29.4° S | 1.9° W | 8 km |
| K | 30.3° S | 0.0° W | 6 km |
| L | 29.7° S | 1.1° E | 6 km |
| M | 29.6° S | 2.1° W | 5 km |
| N | 28.9° S | 0.1° E | 3 km |
| R | 28.4° S | 0.0° W | 3 km |
| S | 28.6° S | 2.0° W | 4 km |
| T | 28.1° S | 2.9° W | 5 km |
| U | 27.9° S | 3.5° W | 11 km |
| W | 29.5° S | 1.4° W | 3 km |
| Y | 30.1° S | 1.6° W | 5 km |
| Z | 27.5° S | 3.0° W | 6 km |
[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.
