St. John (crater)
From Wikipedia, the free encyclopedia
| Crater characteristics | |
| Coordinates | 10.2° N, 150.2° E |
|---|---|
| Diameter | 68 km |
| Depth | Unknown |
| Colongitude | 187° at sunrise |
| Eponym | Charles E. St. John |
St. John is an eroded lunar impact crater on the Moon's far side. This crater is situated to the northeast of the huge Mendeleev walled plain, and southwest of Kohlschütter crater. To the east of St. John is the small Mills crater.
This is a heavily worn and eroded crater formation that is now little more than an uneven depression in the surface. It is scarcely distinguishable from the surrounding terrain, except from the shadows cast by the outer rim. The interior floor is uneven and marked by a chain of three small craterlets near the mid-point.
[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 St. John crater.
| St. John | Latitude | Longitude | Diameter |
|---|---|---|---|
| A | 12.4° N | 150.5° E | 16 km |
| M | 7.5° N | 150.1° E | 16 km |
| W | 12.6° N | 147.0° E | 18 km |
| X | 13.9° N | 147.4° E | 30 km |
| Y | 13.8° N | 149.0° E | 21 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.
- Wlasuk, Peter T. (2000). Observing the Moon. Springer. ISBN 1852331933.
