Helicon (crater)
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This article is about the crater. For other uses of "helicon", see Helicon (disambiguation).
| Crater characteristics | |
| Coordinates | 40.4° N, 23.1° W |
|---|---|
| Diameter | 25 km |
| Depth | 0.5 km |
| Colongitude | 23° at sunrise |
| Eponym | Helicon |
Helicon is a small lunar impact crater that is located on the north part of the Mare Imbrium. To the northwest is the prominent Sinus Iridum formation, a mountain-ringed bay on the mare. Just to the east is the slightly smaller Le Verrier crater. Helicon is a nearly circular crater formation with inner walls that curve down to a relatively flat floor. There is a tiny craterlet located at the mid-point of the interior, and a small craterlet along the southwestern rim.
[edit] Satellite craters
According to convention these features are identified on lunar maps by placing the letter on the side of the crater mid-point that is closest to Helicon crater.
| Helicon | Latitude | Longitude | Diameter |
|---|---|---|---|
| B | 38.0° N | 21.3° W | 6 km |
| C | 40.1° N | 26.2° W | 1 km |
| E | 40.5° N | 24.1° W | 3 km |
| G | 41.7° N | 24.9° W | 2 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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