Cleomedes (crater)

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Cleomedes crater LROC.jpg
LRO mosaic
Coordinates27°42′N 55°30′E / 27.7°N 55.5°E / 27.7; 55.5Coordinates: 27°42′N 55°30′E / 27.7°N 55.5°E / 27.7; 55.5
Diameter126 km
Depth2.7 km
Colongitude304° at sunrise
Oblique Lunar Orbiter 4 image

Cleomedes is a prominent lunar impact crater located in the northeast part of the visible Moon, to the north of Mare Crisium. It was named after Greek astronomer Cleomedes.[1] It is surrounded by rough ground with multiple crater impacts. The irregular crater Tralles intrudes into the northwest rim. To the east is Delmotte. North of Cleomedes is a triple-crater formation with Burckhardt occupying the center.

The outer wall of Cleomedes is heavily worn and eroded, especially along the southern part of the wall. Cleomedes C lies across the south-southwest rim. The crater floor is nearly flat, with a small central peak to the north of the midpoint, forming a linear ridge toward the north-northeast. There are several notable craterlets on the floor, including a pair of overlapping craters just inside the northwest rim.

A rille named Rima Cleomedes crosses the northern floor, running southeast from the northwest rim. This rille branches in a fork after crossing the crater mid-line. Smaller clefts lie in the southeast part of the floor.

Satellite craters[edit]

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

Cleomedes Latitude Longitude Diameter
A 28.9° N 55.0° E 12 km
B 27.2° N 55.9° E 11 km
C 25.7° N 54.9° E 14 km
D 29.3° N 61.9° E 25 km
E 28.6° N 54.4° E 21 km
F 22.6° N 56.9° E 12 km
G 24.0° N 57.3° E 20 km
H 22.4° N 57.6° E 6 km
J 26.9° N 56.8° E 10 km
L 23.8° N 54.4° E 7 km
M 24.2° N 51.6° E 6 km
N 24.8° N 52.5° E 6 km
P 24.8° N 56.4° E 9 km
Q 24.9° N 56.9° E 4 km
R 29.5° N 60.2° E 15 km
S 29.5° N 59.0° E 8 km
T 25.8° N 57.7° E 11 km


  1. ^ "Cleomedes (crater)". Gazetteer of Planetary Nomenclature. USGS Astrogeology Research Program.
  • 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.
  • 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.

External links[edit]