Endymion (crater)

Endymion is a lunar impact crater that lies near the northeast limb of the Moon. It is located to the east of Mare Frigoris and north of Lacus Temporis. To the southwest is the somewhat smaller crater Atlas. Because of its location, Endymion has an oval appearance from foreshortening. Beyond the crater along the lunar limb is the Mare Humboldtianum.^[1]

Endymion

Lunar Orbiter 4 image
Coordinates	53.61°N 56.48°E / 53.61; 56.48
Diameter	122.10 km
Depth	2.6 km
Colongitude	306° at sunrise
Eponym	Endymion

Hercules-centered area in selenochromatic Image (Si) with some landmarks. More infos here : https://www.gawh.it/main/selenocromatica

Oblique Lunar Orbiter 4 image facing northwest

Another oblique Lunar Orbiter 4 image facing west

The floor of Endymion has been covered in low-albedo lava that gives it a dark appearance and makes it relatively easy to locate. The floor is relatively smooth, with only a few craterlets located within the rim. A string of three lies near the northwestern inner wall. There is a wrinkle ridge crossing the crater floor, and near the center is a low, eroded hill that may be the summit of a central peak that is now almost completely submerged by lava. Faint streaks of ray material from Thales to the north-northwest cross the dark floor. The outer rampart is low, wide, and worn from impact erosion.

Endymion is one of the largest craters of Nectarian age.^[2]

The name Endymion was formally recognized by the IAU in 1935.^[3]

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 Endymion.

Endymion	Latitude	Longitude	Diameter
A	54.7° N	62.8° E	30 km
B	59.8° N	67.2° E	59 km
C	58.4° N	60.8° E	32 km
D	52.4° N	62.4° E	20 km
E	53.6° N	66.2° E	18 km
F	56.9° N	65.1° E	12 km
G	56.4° N	55.6° E	15 km
H	51.1° N	56.3° E	14 km
J	53.5° N	50.7° E	67 km
K	51.3° N	52.3° E	7 km
L	55.4° N	71.0° E	9 km
M	52.7° N	70.9° E	9 km
N	52.4° N	69.6° E	9 km
W	52.7° N	69.2° E	10 km
X	52.9° N	50.1° E	6 km
Y	55.8° N	58.0° E	8 km

• 
  Oblique view of Endymion B from Lunar Orbiter 4

References

1. "LPOD lunar photo of the day » 2006 » October". 2007-09-27. Archived from the original on 2007-09-27. Retrieved 2023-03-07.
2. The geologic history of the Moon. USGS Professional Paper 1348. By Don E. Wilhelms, John F. McCauley, and Newell J. Trask. U.S. Government Printing Office, Washington: 1987. Table 9-4.
3. "Endymion (crater)". Gazetteer of Planetary Nomenclature. USGS Astrogeology Research Program.

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