Manilius (crater)

Manilius
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

Manilius is a lunar impact crater on the northeast edge of Mare Vaporum. No prominent craters are located nearby but its nearest named prominent crater is Boscovich lying more than 100 km east-southeast, another is Julius Caesar which is more than 175 km southeast. The crater are surrounded by small mare plains ("lakes") including Laci Doloris, Gaudii and Lenitatis.

Its diameter is 39 km long and is 3,100 meters deep. The area is less than 1,100 km² and the perimeter is over 100 km.

Description

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. Despite the presence of these rays, which generally indicate the age of the crater as Copernican, the crater is currently mapped as Eratosthenian age.[1]

Names

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.[2] Earlier lunar cartographers had given the feature different names. Michael van Langren's 1645 map calls it "Isabellae Reg. Hisp." (Isabella, Queen of Spain),[3] and Johannes Hevelius called it "Insula Besbicus" after the island in Turkey now known as İmralı.[4]

Satellite craters

Manilius crater and its satellite craters taken from Earth in 2012 at the University of Hertfordshire's Bayfordbury Observatory with the telescopes Meade LX200 14" and Lumenera Skynyx 2-1

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.

Oblique Apollo 17 image
Location of the crater 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

  1. ↑ Stratigraphy of Lunar Craters, Don E. Wilhelms and Charles J. Byrne, January 23, 2009
  2. ↑ Ewen A. Whitaker, Mapping and Naming the Moon (Cambridge University Press, 1999), p.61.
  3. ↑ Ewen A. Whitaker, Mapping and Naming the Moon (Cambridge University Press, 1999), p. 198.
  4. ↑ Ewen A. Whitaker, Mapping and Naming the Moon (Cambridge University Press, 1999), p. 202.

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