Apollonius (crater)
Apollo 15 image
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| Coordinates | 4°30′N 61°06′E / 4.5°N 61.1°ECoordinates: 4°30′N 61°06′E / 4.5°N 61.1°E |
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| Diameter | 53 km |
| Depth | 1.5 km |
| Colongitude | 299° at sunrise |
| Eponym | Apollónius |
Apollonius is a lunar crater named after Apollonius of Perga located near the eastern limb of the Moon. It lies in the region of uplands to the west of Mare Undarum and northeast of the Sinus Successus on the Mare Fecunditatis. At this location, on Earth, the crater appears oval due to foreshortening, but the crater is nearly circular. It is southwest of the crater Firmicus, and north of Condon.
The outer rim of Apollonius is somewhat worn and is overlain by a pair of small craters (including Apollonius E) across the western wall. The nearly flat interior floor has a low albedo and has been covered by lava. It lacks a central peak or notable small craters across the bottom.
From that location the Earth would appear in the lunar sky at less than 29 degrees from the top towards the west and 4 degrees to the left.
By convention these features are identified on lunar maps by placing the letter on the side of the crater midpoint that is closest to Apollonius.
The following craters have been renamed by the IAU.
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