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.
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 Apollonius.
Apollonius
Latitude
Longitude
Diameter
A
4.8° N
56.8° E
24 km
B
5.7° N
57.6° E
32 km
E
4.4° N
61.9° E
16 km
F
5.6° N
60.0° E
16 km
H
3.4° N
59.6° E
20 km
J
4.6° N
57.5° E
12 km
L
6.5° N
54.6° E
9 km
M
4.8° N
61.9° E
10 km
N
4.8° N
64.1° E
9 km
S
1.1° N
62.6° E
15 km
U
4.9° N
59.9° E
7 km
V
4.4° N
58.2° E
16 km
X
7.0° N
58.1° E
31 km
Y
4.9° N
62.6° E
10 km
The following craters have been renamed by the IAU.
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. S2CID122125855.