Manilius (crater)

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Manilius (crater)
Manilius crater 4097 h2.jpg
Coordinates 14°30′N 9°06′E / 14.5°N 9.1°E / 14.5; 9.1Coordinates: 14°30′N 9°06′E / 14.5°N 9.1°E / 14.5; 9.1
Diameter 39 km
Depth 3.1 km
Colongitude 351° at sunrise
Eponym Marcus Manilius
Oblique Apollo 17 image
Location of the crater Manilius

Manilius is a lunar impact crater on the northeast edge of Mare Vaporum.

Description[edit]

Manilius has a well-defined rim with a sloping inner surface that runs directly down to the ring-shaped mound of scree along the base, and a small outer rampart. The small crater interior has a higher albedo than the surroundings, and it appears bright when the sun is overhead. Within the crater is a central peak formation near the midpoint. The crater also possesses a ray system that extends for a distance of over 300 kilometers.

Names[edit]

Manilius is named after the Roman astronomer Marcus Manilius. Like many of the craters on the Moon's near side, it was given its name by Giovanni Riccioli, whose 1651 nomenclature system has become standardized.[1] Earlier lunar cartographers had given the feature different names. Michael van Langren's 1645 map calls it "Isabellae Reg. Hisp." (Isabella, Queen of Spain),[2] and Johannes Hevelius called it "Insula Besbicus" after the island in Turkey now known as İmralı.[3]

Satellite craters[edit]

By convention these features are identified on lunar maps by placing the letter on the side of the crater midpoint that is closest to Manilius.

Manilius Latitude Longitude Diameter
B 16.6° N 7.3° E 6 km
C 12.1° N 10.4° E 7 km
D 13.2° N 7.0° E 5 km
E 18.3° N 6.4° E 49 km
G 15.5° N 9.7° E 5 km
H 17.8° N 8.6° E 3 km
K 11.9° N 11.2° E 3 km
T 13.4° N 10.6° E 4 km
U 13.8° N 10.8° E 4 km
W 13.4° N 12.9° E 4 km
X 14.4° N 13.4° E 3 km
Z 16.4° N 11.7° E 3 km

The following craters have been renamed by the IAU.

References[edit]

  1. ^ Ewen A. Whitaker, Mapping and Naming the Moon (Cambridge University Press, 1999), p.61.
  2. ^ Ewen A. Whitaker, Mapping and Naming the Moon (Cambridge University Press, 1999), p. 198.
  3. ^ Ewen A. Whitaker, Mapping and Naming the Moon (Cambridge University Press, 1999), p. 202.