Arnold (crater)
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| Crater characteristics | |
 Location of Arnold crater. |
|
| Coordinates | 66.8° N, 35.9° E |
|---|---|
| Diameter | 95 km |
| Depth | 2.0 km |
| Colongitude | 325° at sunrise |
| Eponym | Christoph Arnold |
Arnold is a lunar crater that is located in the north-northeastern part of the visible Moon, near the lunar limb. This location gives the crater a notably oval appearance due to foreshortening, although the formation is actually relatively round. It lies to the northeast of the Mare Frigoris, to the north of Democritus crater. West of Arnold is the smaller Moigno crater.
The ancient rim of Arnold has been worn and rounded by ages of subsequent bombardment. There is a gap in the wall to the southwest, marked by the tiny crater 'Arnold J', and the wall is relatively low along the eastern edge. The northern half of the rim is the most intact, particularly to the northeast where is joins satellite crater 'Arnold A'.
The inner floor of Arnold crater has been resurfaced by lava, and is relatively flat except for a number of tiny craterlets. The most notable crater in the interior is 'Arnold F', in the northwest section. If the crater once possessed a central peak, no sign of this feature now remains.
[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 Arnold crater.
| Arnold | Latitude | Longitude | Diameter |
|---|---|---|---|
| A | 68.8° N | 39.8° E | 57 km |
| E | 71.6° N | 38.3° E | 32 km |
| F | 67.5° N | 35.2° E | 10 km |
| G | 67.3° N | 31.4° E | 11 km |
| H | 72.6° N | 45.3° E | 13 km |
| J | 65.9° N | 33.7° E | 6 km |
| K | 70.8° N | 42.8° E | 29 km |
| L | 70.2° N | 36.1° E | 33 km |
| M | 68.3° N | 43.6° E | 7 km |
| N | 70.2° N | 41.9° E | 18 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.
