 | This article includes a list of general references, but it lacks sufficient corresponding inline citations. (August 2018) |
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| Coordinates | 10°36′S 42°24′W / 10.6°S 42.4°W |
|---|---|
| Diameter | 120 km |
| Depth | 1.0 km |
| Colongitude | 42° at sunrise |
| Eponym | Jean-Antoine Letronne |
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Letronne is the lava-flooded remnant of a lunar impact crater. It was named after French archaeologist Jean-Antoine Letronne.[1] 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 crater Gassendi.To the west-southwest is the flooded crater Billy, and north-northwest lies the smaller Flamsteed.
The surviving rim of Letronne is now little more than a semi-circular series of ridges. The flooded, broken rim of Winthrop overlies 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 midpoint of the crater. The wrinkle ridge Dorsa Rubey traverses the floor from north to south,[2] and outlines 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.
Letronne is one of the largest craters of Lower (Early) Imbrian age.[3]
- ^ "Letronne (crater)". Gazetteer of Planetary Nomenclature. USGS Astrogeology Research Program.
- ^ Map quadrangle LAC-75, Gazetteer of Planetary Nomenclature. USGS Astrogeology Research Program
- ^ The geologic history of the Moon. USGS Professional Paper 1348. By Don E. Wilhelms, John F. McCauley, and Newell J. Trask. U.S. Government Printing Office, Washington: 1987. Table 10.2.