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Letronne (crater) - Wikipedia

Coordinates: 10°36′S 42°24′W / 10.6°S 42.4°W

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Letronne
Letronne from Apollo 16. NASA photo.
Coordinates	10°36′S 42°24′W / 10.6°S 42.4°W / -10.6; -42.4
Diameter	120 km
Depth	1.0 km
Colongitude	42° at sunrise
Eponym	Jean-Antoine Letronne

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]

Satellite craters

By convention these features are identified on lunar maps by placing the letter on the side of the crater midpoint that is closest to Letronne.

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.
Letronne P — See Winthrop.

References

^ "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.

Andersson, L. E.; Whitaker, E. A. (1982). NASA Catalogue of Lunar Nomenclature. NASA RP-1097.
Bussey, B.; Spudis, P. (2004). The Clementine Atlas of the Moon. New York: Cambridge University Press. ISBN 978-0-521-81528-4.
Cocks, Elijah E.; Cocks, Josiah C. (1995). Who's Who on the Moon: A Biographical Dictionary of Lunar Nomenclature. Tudor Publishers. ISBN 978-0-936389-27-1.
McDowell, Jonathan (July 15, 2007). "Lunar Nomenclature". Jonathan's Space Report. Retrieved 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 (2): 136–186. Bibcode:1971SSRv...12..136M. doi:10.1007/BF00171763. S2CID 122125855.
Moore, Patrick (2001). On the Moon. Sterling Publishing Co. ISBN 978-0-304-35469-6.
Price, Fred W. (1988). The Moon Observer's Handbook. Cambridge University Press. ISBN 978-0-521-33500-3.
Rükl, Antonín (1990). Atlas of the Moon. Kalmbach Books. ISBN 978-0-913135-17-4.
Webb, Rev. T. W. (1962). Celestial Objects for Common Telescopes (6th revised ed.). Dover. ISBN 978-0-486-20917-3.
Whitaker, Ewen A. (1999). Mapping and Naming the Moon. Cambridge University Press. ISBN 978-0-521-62248-6.
Wlasuk, Peter T. (2000). Observing the Moon. Springer. ISBN 978-1-85233-193-1.

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