Ritchey (lunar crater)

Ritchey is a small lunar impact crater named after the American astronomer George Willis Ritchey.[1] The crater is situated to the east of Albategnius in the central lunar highlands. Its somewhat angular rim is broken along the northwestern wall by a pair of smaller, adjacent craters. The floor of Ritchey is fairly flat, with a pair of small central mounds.

Ritchey

Apollo 16 image
Coordinates	11.1°S 8.5°E
Diameter	25 km
Depth	1.3 km
Colongitude	352° at sunrise
Eponym	George W. Ritchey

Satellite craters

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

Ritchey crater and its satellite craters taken from Earth in 2012 at the University of Hertfordshire's Bayfordbury Observatory with the telescopes Meade LX200 14" and Lumenera Skynyx 2-1

Ritchey	Latitude	Longitude	Diameter
A	11.3° S	7.7° E	6 km
B	11.9° S	8.9° E	7 km
C	10.9° S	9.2° E	6 km
D	10.2° S	9.2° E	6 km
E	10.7° S	8.4° E	14 km
F	10.5° S	7.6° E	4 km
J	12.3° S	9.9° E	17 km
M	12.4° S	9.5° E	8 km
N	11.1° S	10.0° E	17 km

References

1. "Ritchey (lunar crater)". Gazetteer of Planetary Nomenclature. USGS Astrogeology Research Program.

• Andersson, L. E.; Whitaker, E. A. (1982). NASA Catalogue of Lunar Nomenclature. NASA RP-1097.CS1 maint: ref=harv (link)
• Bussey, B.; Spudis, P. (2004). The Clementine Atlas of the Moon. New York: Cambridge University Press. ISBN 978-0-521-81528-4.CS1 maint: ref=harv (link)
• 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.CS1 maint: ref=harv (link)
• McDowell, Jonathan (July 15, 2007). "Lunar Nomenclature". Jonathan's Space Report. Retrieved 2007-10-24.CS1 maint: ref=harv (link)
• 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.
• Moore, Patrick (2001). On the Moon. Sterling Publishing Co. ISBN 978-0-304-35469-6.CS1 maint: ref=harv (link)
• Price, Fred W. (1988). The Moon Observer's Handbook. Cambridge University Press. ISBN 978-0-521-33500-3.CS1 maint: ref=harv (link)
• Rükl, Antonín (1990). Atlas of the Moon. Kalmbach Books. ISBN 978-0-913135-17-4.CS1 maint: ref=harv (link)
• Webb, Rev. T. W. (1962). Celestial Objects for Common Telescopes (6th revised ed.). Dover. ISBN 978-0-486-20917-3.CS1 maint: ref=harv (link)
• Whitaker, Ewen A. (1999). Mapping and Naming the Moon. Cambridge University Press. ISBN 978-0-521-62248-6.CS1 maint: ref=harv (link)
• Wlasuk, Peter T. (2000). Observing the Moon. Springer. ISBN 978-1-85233-193-1.CS1 maint: ref=harv (link)

External links

• Albategnius at The Moon Wiki
• Tres Amicis - on the three small craterlets due north of Ritchey F
• Wood, Charles (November 8, 2009). "Somewhere Over the Rainbow". Lunar Photo of the Day.