Capella (crater)

Capella (crater)
Capella (right) and Isidorus (center) from Apollo 16. NASA photo.
Diameter	49 km
Depth	Unknown
Colongitude	325° at sunrise
Eponym	Martianus Capella

Capella is a lunar crater 49 km (30 mi) in diameter that lies to the north of the Mare Nectaris, in a rugged region with many small impact craters. It intrudes slightly into the eastern rim of the crater Isidorus, a feature only slightly smaller in diameter.

The wall of Capella is low but relatively thick and irregular, with a large promontory intruding on the south-eastern side. The crater is crossed by a deep rift, the Vallis Capella, which passes directly through Capella from the north rim through the southeast side of the wall, and extends out both sides for a combined distance of 110 kilometers. This feature was formed by a chain of craters. In the middle of the crater is a wide, round peak with a craterlet at the top. The western side of the crater is dotted with impact debris, forming clusters of small hills.

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 Capella.

Capella	Latitude	Longitude	Diameter
A	7.6° S	37.2° E	13 km
B	9.4° S	36.8° E	10 km
C	5.7° S	36.3° E	11 km
D	6.7° S	37.6° E	8 km
E	7.5° S	37.7° E	16 km
F	9.2° S	35.4° E	14 km
G	6.8° S	36.9° E	12 km
H	8.1° S	37.4° E	9 km
J	9.4° S	36.0° E	9 km
M	4.4° S	37.0° E	12 km
R	6.0° S	35.2° E	7 km
T	6.9° S	34.2° E	6 km

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.