Manilius (crater)
Template:Short descriptionTemplate:Infobox Lunar crater
Manilius is a lunar impact crater on the northeast edge of Mare Vaporum. Its diameter is 38 km.<ref name=gpn>Template:Gpn</ref>
DescriptionEdit
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.<ref>Stratigraphy of Lunar Craters, Don E. Wilhelms and Charles J. Byrne, January 23, 2009</ref><ref>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 12.2.</ref>
NamesEdit
Manilius is named after the Roman astronomer Marcus Manilius.<ref name=gpn/> 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.<ref>Ewen A. Whitaker, Mapping and Naming the Moon (Cambridge University Press, 1999), p.61.</ref> Earlier lunar cartographers had given the feature different names. Michael van Langren's 1645 map calls it "Isabellae Reg. Hisp." (Isabella, Queen of Spain),<ref>Ewen A. Whitaker, Mapping and Naming the Moon (Cambridge University Press, 1999), p. 198.</ref> and Johannes Hevelius called it "Insula Besbicus" after the island in Turkey now known as İmralı.<ref>Ewen A. Whitaker, Mapping and Naming the Moon (Cambridge University Press, 1999), p. 202.</ref>
Satellite cratersEdit
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 |
- Manilius G crater AS15-P-9918.jpg
Oblique view of Manilius G, northeast of Manilius
The following craters have been renamed by the IAU.
ReferencesEdit
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External linksEdit
- Manilius at The Moon Wiki
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