Ash Observatory Lunar 100 51-100

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L
Feature Name
Significance

 
Latitude Deg's

Longitude Deg's
Diameter (km)
Rükl Chart
51
Davy Crater Chain
Result of comet fragment impact
11.1S
6.6W
50
43
 
52
Crüger
Possible volcanic caldera
16.7S
66.8W
45
50
 
53
Lamont
Possible buried basin
4.4N
23.7E
106
35
54
Hippalus Rilles
Rilles concentric to Humorum basin
24.5S
29.0W
240
52, 53
 
55
Baco
Unusally smooth crater floor & surrounding plains
51.0S
19.1E
69
74
 
56
Australe Basin
Partially flooded ancient basin
49.8S
84.5E
880
76
57
Reiner Gamma
Conspicuous swirl & magnetic anomaly
7.7N
59.2W
70
28
58
Rheita Valley
Basin secondary-crater chain
42.5S
51.5E
445
68
59
Schiller-Zucchius Basin
Badly degraded overlooked basin
56.0S
45.0W
335
70, 71
60
Kies Pi
Volcanic dome
26.9S
24.2W
45
53
61
Mösting A
Simple crater close to center of lunar near side
3.2S
5.2W
13
43
62
Rümker
Large volcanic dome
40.8N
58.1W
70
8
63
Imbrium Sculpture
Basin ejecta near & overlying Boscovich & Julius
11.0N
12.0E
-
34
 
64
Descartes
Apollo 16 landing site; putative region of highland volcanism
11.7S
15.7W
48
45
 
65
Hortensius Domes
Dome field north of Hortensius
7.6N
27.9W
10
30
66
Hadley Rille
Lava channel near Apollo 15 landing site
25.0N
3.0E
-
22
67
Fra Mauro Formation
Apollo 14 landing site on Imbrium ejecta
3.6S
17.5W
-
42
68
Flamsteed P
Proposed young volcanic crater & Surveyor 1 landing site
3.0S
44.0W
112
40
69
Copernicus Secondary Craters
Rays & craterlets near Pytheas
19.6N
19.1 W
4
20

70

Humboldtianum Basin

Multi-ring impact basin

57.0N

80.0E

650

7

 

71

Sulpicius Gallus Dark Mantle

Ash eruptions north of crater

19.6N

11.6E

12

23

72

Atlas Dark-Halo Craters

Explosive volcanic pits on the floor of Atlas

46.7N

44.4E

87

15

 

73

Smythii Basin

Difficult to observe scarp & mare

2.0S

87.0E

740

38, 49

74

Copernicus H

Dark-Halo crater

6.9N

18.3W

5

31

75

Ptolemaeus B

Saucer like depression on the floor of Ptolemaeus

8.0S

0.8W

16

44