Colombo (crater)

Colombo

Lunar Orbiter 4 image
Coordinates	15°16′S46°01′E / 15.26°S 46.02°E / -15.26; 46.02
Diameter	79.02 km (49.10 mi)
Depth	2.4 km (1.5 mi)
Colongitude	315° at sunrise
Eponym	Christopher Columbus

The crater area (on the left) in selenochromatic format (Si).

Oblique view facing south from Apollo 8

Oblique view of Colombo crater, facing south, from Apollo 16

Satellite crater Colombo B, LRO image

Colombo is a lunar impact crater that lies on the strip of rough continental terrain between Mare Fecunditatis to the east and Mare Nectaris in the west. It is named for the late 15th and early 16th century Italian explorer Christopher Columbus. ^[1]

The rim of Colombo is circular, although slightly indented along the northwest where Colombo A intrudes slightly into the interior. The inner wall is asymmetrical, being much more narrow to the north and northwest and wider to the southeast. The rim is somewhat eroded, and several tiny craterlets lie along the inner wall to the southeast. The small satellite concentric crater  [ uk ] Colombo B lies across the south-southwestern rim. ^[2]

Colombo is located to the south of the crater Goclenius, and northwest of Cook.

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 Colombo.

Colombo	Coordinates	Diameter, km
A	14°11′S44°28′E / 14.18°S 44.46°E / -14.18; 44.46 (Colombo A)	40.8
B	16°25′S45°10′E / 16.41°S 45.16°E / -16.41; 45.16 (Colombo B)	13.5
E	15°49′S42°23′E / 15.82°S 42.38°E / -15.82; 42.38 (Colombo E)	14.9
G	14°01′S43°26′E / 14.01°S 43.44°E / -14.01; 43.44 (Colombo G)	9.0
H	17°27′S44°08′E / 17.45°S 44.13°E / -17.45; 44.13 (Colombo H)	14.1
J	14°18′S43°37′E / 14.3°S 43.62°E / -14.3; 43.62 (Colombo J)	6.0
K	15°50′S46°26′E / 15.83°S 46.44°E / -15.83; 46.44 (Colombo K)	5.0
M	14°38′S47°48′E / 14.64°S 47.8°E / -14.64; 47.8 (Colombo M)	15.7
P	15°07′S47°54′E / 15.11°S 47.9°E / -15.11; 47.9 (Colombo P)	5.9
T	18°58′S45°28′E / 18.97°S 45.46°E / -18.97; 45.46 (Colombo T)	10.0

References

1. "Colombo (crater)". Gazetteer of Planetary Nomenclature. USGS Astrogeology Research Program.
2. Trang D., Gillis-Davis J. J., Hawke B. R. (2016). "The origin of lunar concentric craters". Icarus. 278: 62–78. Bibcode:2016Icar..278...62T. doi:10.1016/j.icarus.2016.06.001. (Colombo B is number 103 in the table in supplements).

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