Simpelius (crater)
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| Crater characteristics | |
| Coordinates | 73.0° S, 15.2° E |
|---|---|
| Diameter | 70 km |
| Depth | 3.2 km |
| Colongitude | 349° at sunrise |
| Eponym | Hugh Sempill |
Simpelius is a lunar impact crater that lies in the southern part of the Moon. It lies to the north-northwest of the somewhat larger Schomberger crater, and east-southeast of the prominent Moretus crater.
The most distinctive aspect of this crater is the asymmetry of the inner wall, with the side being nearly twice as wide at the southern end as it is to the north. As a result the level interior floor is offset to the north of the crater interior. The rim and inner wall are less sharply defined when compared to Schomberger or Moretus, with the features softened and smoothed by impacts. The rim is uneven, with peaks to the north, west, east, and south-southeast, and low sections in between. There are also a number of small crater pits along the inner wall and the interior floor.
[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 Simpelius crater.
| Simpelius | Latitude | Longitude | Diameter |
|---|---|---|---|
| A | 70.1° S | 16.5° E | 60 km |
| B | 75.2° S | 10.2° E | 50 km |
| C | 72.6° S | 5.9° E | 49 km |
| D | 71.6° S | 8.6° E | 54 km |
| E | 70.1° S | 11.0° E | 45 km |
| F | 68.7° S | 16.8° E | 29 km |
| G | 71.8° S | 23.0° E | 24 km |
| H | 68.0° S | 15.5° E | 29 km |
| J | 76.1° S | 8.4° E | 17 km |
| K | 74.8° S | 15.7° E | 23 km |
| L | 70.4° S | 6.7° E | 16 km |
| M | 70.4° S | 16.4° E | 7 km |
| N | 71.3° S | 24.3° E | 8 km |
| P | 75.5° S | 5.0° E | 8 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.
