Letronne (crater)
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| Crater characteristics | |
 Letronne from Apollo 16. NASA photo. |
|
| Coordinates | 10.6° S, 42.4° W |
|---|---|
| Diameter | 120 km |
| Depth | 1.0 km |
| Colongitude | 42° at sunrise |
| Eponym | Jean A. Letronne |
Letronne is the lava-flooded remnant of a lunar crater. The northern part of the rim is completely missing, and opens into the Oceanus Procellarum, forming a bay along the southwestern shore. The formation is located to the northwest of the large Gassendi crater.To the west-southwest is the flooded crater Billy, and north-northwest lies the smaller Flamsteed crater.
The surviving rim of Letronne is now little more than a semi-curcular series of ridges. The flooded, broken rim of Winthrop crater overlays the western wall. The rim is the most intact along the eastern stretch, forming a mountainous promontory into the mare. A small cluster of central rises lie at the mid-point of the crater. A wrinkle-ridge traverses the floor from north to south, and outline a portion of the missing rim. The crater floor is otherwise nearly smooth and relatively free of craterlets, with the exception of 'Letronne B' near the southeast rim.
[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 Letronne crater.
| Letronne | Latitude | Longitude | Diameter |
|---|---|---|---|
| A | 12.1° S | 39.1° W | 7 km |
| B | 11.2° S | 41.2° W | 5 km |
| C | 10.7° S | 38.5° W | 4 km |
| F | 9.2° S | 46.1° W | 8 km |
| G | 12.7° S | 46.5° W | 10 km |
| H | 12.6° S | 46.0° W | 4 km |
| K | 14.5° S | 43.6° W | 5 km |
| L | 14.3° S | 44.3° W | 5 km |
| M | 12.0° S | 44.1° W | 3 km |
| N | 12.3° S | 39.8° W | 4 km |
| T | 12.5° S | 42.6° W | 3 km |
The following craters have been renamed by the IAU.
- Letronne D — See Scheele crater.
- Letronne P — See Winthrop crater.
[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.
