Porter (lunar crater)
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| Crater characteristics | |
| Coordinates | 56.1° S, 10.1° W |
|---|---|
| Diameter | 52 km |
| Depth | 2.3 km |
| Colongitude | 12° at sunrise |
| Eponym | Russell W. Porter |
Porter is a lunar impact crater that is located in the southern part of the Moon, and lies across the northwestern rim of the huge Clavius walled-plain. Although generally circular, the form of this crater has been modified by the geometry of the surface on which it was formed. The outer rim is generally lower to the southwest, where it lies on the floor of Clavius. Likewise the interior floor is flatter near this face. In contrast the northeastern floor is rougher and more uneven in the northeastern half.
The crater is somewhat worn in appearance, in comparison with the younger and sharper-edged Rutherfurd crater to the south along the southeast rim of Clavius. There is a double central peak located just to the southwest of the mid-point. A small craterlet lies along the northwestern inner wall of the crater, but the formation is not otherwise significantly marked by smaller impacts.
This crater was formerly designated 'Clavius B' before being renamed by the IAU.
[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 Porter crater.
| Porter | Latitude | Longitude | Diameter |
|---|---|---|---|
| B | 54.4° S | 8.6° W | 12 km |
| C | 54.8° S | 10.3° W | 12 km |
[edit] References
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- 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.
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- Whitaker, Ewen A. (1999). Mapping and Naming the Moon. Cambridge University Press. ISBN 0-521-62248-4.
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