The lunar 100 is a list of lunar features compiled by Dr.Charles A. 'Chuck' Wood, ordered by increasing difficulty of viewing or imaging. All of them are worth a look anytime. One of the biggest challange of lunar imaging is a complete coverage of the lunar 100

L | Feature Name | Significance | Lat. (°) | Long. (°) | Diam. (km) | Rükl Chart |

1 | Moon | Large satellite | — | — | 3476 | — |

2 | Earthshine | Twice reflected sunlight | — | — | — | — |

3 | Mare/highland dichotomy | Two materials with distinct compositions | — | — | — | — |

4 | Apennines | Imbrium basin rim | 18.9N | 3.7W | 70 | 22 |

5 | Copernicus, 2, 3, 4, 5, 6, 7 | Archetypal large complex crater | 9.7N | 20.1W | 93 | 31 |

6 | Tycho, 2, 3 | Large rayed crater with impact melts | 43.4S | 11.1W | 85 | 64 |

7 | Altai Scarp, 2 | Nectaris basin rim | 24.3S | 22.6E | 425 | 57 |

8 | Theophilus, Cyrillus, Catharina, 2, 3 | Crater sequence illustrating stages of degradation | 13.2S | 24.0E | — | 46,57 |

9 | Clavius, 2, 3 | Lacks basin features in spite of its size | 58.8S | 14.1W | 225 | 72 |

10 | Mare Crisium | Mare contained in large circular basin | 18.0N | 59.0E | 540 | 26, 27, 37, 38 |

11 | Aristarchus, 2 | Very bright crater with dark bands on its walls | 23.7N | 47.4W | 40 | 18 |

12 | Proclus | Oblique-impact rays | 16.1N | 46.8E | 28 | 26 |

13 | Gassendi | Floor-fractured crater | 17.6S | 40.1W | 101 | 52 |

14 | Sinus Iridum , 2 | Very large crater with missing rim | 45.0N | 32.0W | 260 | 10 |

15 | Straight Wall | Best example of a lunar fault | 21.8S | 7.8W | 110 | 54 |

16 | Petavius, 2 | Crater with domed & fractured floor | 25.1S | 60.4E | 177 | 59 |

17 | Schröter's Valley, 2 | Giant sinuous rille | 26.2N | 50.8W | 168 | 18 |

18 | Mare Serenitatis dark edges | Distinct mare areas with different compositions | 17.8N | 23.0E | N/A | 24 |

19 | Alpine Valley | Lunar graben | 49.0N | 3.0E | 165 | 4 |

20 | Posidonius, 2 | Floor-fractured crater | 31.8N | 29.9E | 95 | 14 |

21 | Fracastorius | Crater with subsided & fractured floor | 21.5S | 33.2E | 124 | 58 |

22 | Aristarchus Plateau | Mysterious uplifted region mantled with pyroclastics | 26.0N | 51.0W | 150 | 18 |

23 | Pico | Isolated Imbrium basin-ring fragment | 45.7N | 8.9W | 25 | 11 |

24 | Hyginus Rille, 2 | Rille containing rimless collapse pits | 7.4N | 7.8E | 220 | 34 |

25 | Messier & Messier A | Oblique ricochet-impact pair | 1.9S | 47.6E | 11 | 48 |

26 | Mare Frigoris | Arcuate mare of uncertain origin | 56.0N | 1.4E | 1600 | 2–6 |

27 | Archimedes | Large crater lacking central peak | 29.7N | 4.0W | 83 | 12,22 |

28 | Hipparchus | First drawing of a single crater | 5.5S | 4.8E | 150 | 44,45 |

29 | Aridaeus Rille | Long, linear graben | 6.4N | 14.0E | 250 | 34 |

30 | Schiller | Possible oblique impact | 51.9S | 39.0W | 180 | 71 |

31 | Taruntius | Young floor-fractured crater | 5.6N | 46.5E | 56 | 37 |

32 | Arago Alpha & Beta | Volcanic domes | 6.2N | 21.4E | 26 | 35 |

33 | Serpentine Ridge | Basin inner-ring segment | 27.3N | 25.3E | 155 | 24 |

34 | Lacus Mortis, 2 | Strange crater with rille & ridge | 45.0N | 27.2E | 152 | 14 |

35 | Triesnecker Rilles | Rille family | 4.3N | 4.6E | 215 | 33 |

36 | Grimaldi basin | A small two-ring basin | 5.5S | 68.3W | 440 | 39 |

37 | Bailly | Barely discernible basin | 66.5S | 69.1W | 303 | 71 |

38 | Sabine & Ritter | Possible twin impacts | 1.7N | 19.7E | 30 | 35 |

39 | Schickard, 2 | Crater floor with Orientale basin ejecta stripe | 44.3S | 55.3W | 227 | 62 |

40 | Janssen Rille | Rare example of a highland rille | 45.4S | 39.3E | 190 | 67,68 |

41 | Bessel ray | Ray of uncertain origin near Bessel | 21.8N | 17.9E | N/A | 24 |

42 | Marius Hills | Complex of volcanic domes & hills | 12.5N | 54.0W | 125 | 28,29 |

43 | Wargentin, 2, 3 | A crater filled to the rim with lava or ejecta | 49.6S | 60.2W | 84 | 70 |

44 | Mersenius | Domed floor cut by secondary craters | 21.5S | 49.2W | 84 | 51 |

45 | Maurolycus | Region of saturation cratering | 42.0S | 14.0E | 114 | 66 |

46 | Regiomontanus central peak | Possible volcanic peak | 28.0S | 0.6W | 124 | 55 |

47 | Alphonsus dark spots | Dark-halo eruptions on crater floor | 13.7S | 3.2W | 119 | 44 |

48 | Cauchy region | Fault, rilles, & domes | 10.5N | 38.0E | 130 | 36 |

49 | Gruithuisen Delta & Gamma | Volcanic domes formed with viscous lavas | 36.3N | 40.0W | 20 | 9 |

50 | Cayley Plains | Light, smooth plains of uncertain origin | 4.0N | 15.1E | 14 | 34 |

51 | Davy crater chain | Result of comet-fragment impacts | 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 | Unusually smooth crater floor & surrounding plains | 51.0S | 19.1E | 69 | 74 |

56 | Australe basin | A 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 Caesar | 11.0N | 12.0E | — | 34 |

64 | Descartes | Apollo 16 landing site; putative region of highland volcanism | 11.7S | 15.7E | 48 | 45 |

65 | Hortensius domes | Dome field north of Hortensius | 7.6N | 27.9W | 10 | 30 |

66 | Hadley Rille, 2 | 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, 2 | Rays & craterlets near Pytheas | 19.6N | 19.1W | 4 | 20 |

70 | Humboldtianum basin | Multi-ring impact basin | 57.0N | 80.0E | 650 | 7 |

71 | Sulpicius Gallus dark mantle | Ash eruptions northwest 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 basin scarp & mare | 2.0S | 87.0E | 740 | 38,49 |

74 | Copernicus H, 2 | Dark-halo impact crater | 6.9N | 18.3W | 5 | 31 |

75 | Ptolemaeus B | Saucerlike 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 | 39,5 |

78 | Lambert R | A 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, 2 | 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 , 2, 3 | Crater pits at limits of detection | 51.6N | 9.4W | 101 | 3,4 |

84 | Pitatus, 2 | 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, II |

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 | 25.9S | 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 | 79.3S | 84.9W | 162 | 72, VI |

95 | Procellarum basin | The Moon's biggest 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 young volcanic caldera | 18.6N | 5.3E | 3 | 22 |

100 | Mare Marginis swirls | Possible magnetic field deposits | 18.5N | 88.0E | — | 27, III |