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

76

W. Bond

Large crater degraded by Imbrium ejecta

65.3N

3.7E

158

4

77

Sirsalis Rille

Procellarum basin radial rilles

15.7S

61.7W

425

39, 50

78

Lambert R

Buried ghost crater

23.8N

20.6W

54

20

79

Sinus Aestuum

Eastern dark mantle volcanic deposit

12.0N

3.5W

90

33

 

80

Orientale Basin

Youngest large impact basin

19.0S

95.0W

930

50

81

Hesiodus A

Concentric crater

30.1S

17.0W

15

54

82

Linné

Small crater once thought to have disappeared

27.7N

11.8E

2.4

23

83

Plato Craterlets

Crater pits at limits of detection

51.6N

9.4W

101

3, 4

84

Pitatus

Crater with concentric rilles

29.8S

13.5W

97

54

 

85

Langrenus Rays

Aged ray system

8.9S

60.9E

132

49

 

86

Prinz Rilles

Rille system near the crater Prinz

27.0N

43.0W

46

19

 

87

Humboldt

Crater with central peaks & dark spots

27.0S

80.9E

207

60

88

Peary

Difficult to observe polar crater

88.6N

33.0E

74

4, 11

 

89

Valentine Dome

Volcanic dome

30.5N

10.1E

30

13

 

90

Armstrong,Aldrin & Collins

Small craters near the Apollo 11 landing site

1.3N

23.7E

3

35

91

De Gasparis Rilles

Area with many rilles

25.95S

50.7W

30

51

92

Gylden Valley

Part of the Imbrium radial sculpture

5.1S

0.7E

47

44

 

93

Dionysius Rays

Unusual & rare dark rays

2.8N

17.3E

18

35

 

94

Drygalski

Large south pole region crater

79.35S

84.9W

162

72, VI

95

Procellarum Basin

Moon's largest basin

23.0N

15.0W

3200

-

 

96

Leibnitz Mountains

Rim of south pole-Aitken basin

85.0S

30.0E

-

73, V

 

97

Inghirami Valley

Orientale basin ejecta

44.0S

73.0W

140

61

98

Imbrium Lava Flows

Mare lava flow boundaries

32.8N

22.0W

-

10

 

99

Ina

D-shaped volcanic caldera

18.6N

5.3E

3

22

 

100

Mare Marginis Swirls

Possible magnetic field deposits

18.5N

88.0E

-

27, III

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L

Feature Name

Significance

Latitude Deg's

Longitude Deg's

Diameter (km)

Rükl Chart

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