De Roy (crater)

De Roy (crater)

Coordinates	55°18′S 99°06′W / 55.3°S 99.1°W / -55.3; -99.1Coordinates: 55°18′S 99°06′W / 55.3°S 99.1°W / -55.3; -99.1
Diameter	43 km
Depth	Unknown
Colongitude	99° at sunrise
Eponym	Felix de Roy

De Roy is a lunar impact crater that is located on the far side of the Moon, just behind the southwestern limb. This portion of the lunar surface is brought into view during favorable librations, allowing observation of this formation. However the crater is viewed from the side when watched from the Earth, and little detail can be seen. De Roy lies to the west of the crater Arrhenius, and east of the larger Boltzmann.

This crater has a worn and rounded outer rim, forming a slightly irregular circle. A pair of tiny craterlets lie along the southeast rim, and there is a narrow cleft in the northern wall. The interior floor is level and nearly featureless, with only a few tiny crater pits to mark the surface.

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 De Roy.

De Roy	Latitude	Longitude	Diameter
N	59.7° S	103.1° W	26 km
P	58.4° S	102.4° W	35 km
Q	58.1° S	103.6° W	22 km

The following craters have been renamed by the IAU.

• De Roy X — See Chadwick.

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. http://planetarynames.wr.usgs.gov/. Retrieved 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. http://host.planet4589.org/astro/lunar/. 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.  edit
• 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 0-521-33500-0. 
• 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 ed.). 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 1-85233-193-3.