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Calippus (crater)
Encyclopedia
Calippus is a small lunar
crater
that is located on the eastern edge of the rugged Montes Caucasus
mountain range in the northern part of the Moon
. It lies to the southwest of the crater remnant Alexander
, to the northwest of the Mare Serenitatis
.
The outer rim of Calippus has an irregular appearance, with outward bulges to the northeast and particularly to the west where there is an interior shelf of slumped material. The exterior has a slight rampart that is surrounded by the rugged terrain of the mountain range. Within the sharp-sided interior walls is a rough and irregular interior floor.
To the southeast of this crater, on the edge of the Mare Serenitatis, is an arcing rille
designated Rima Calippus. This cleft follows a path to the northeast for a length of about 40 kilometers.
Moon
The Moon is Earth's only known natural satellite,There are a number of near-Earth asteroids including 3753 Cruithne that are co-orbital with Earth: their orbits bring them close to Earth for periods of time but then alter in the long term . These are quasi-satellites and not true moons. For more...
crater
Impact crater
In the broadest sense, the term impact crater can be applied to any depression, natural or manmade, resulting from the high velocity impact of a projectile with a larger body...
that is located on the eastern edge of the rugged Montes Caucasus
Montes Caucasus
Montes Caucasus is a rugged range of mountains in the northeastern part of the Moon. It begins at a gap of level surface that joins the Mare Imbrium to the west with the Mare Serenitatis to the east, and extends in an irregular band to the north-northeast to the western side of the prominent crater...
mountain range in the northern part of the Moon
Moon
The Moon is Earth's only known natural satellite,There are a number of near-Earth asteroids including 3753 Cruithne that are co-orbital with Earth: their orbits bring them close to Earth for periods of time but then alter in the long term . These are quasi-satellites and not true moons. For more...
. It lies to the southwest of the crater remnant Alexander
Alexander (crater)
Alexander is a lunar crater-like feature in the rugged surface to the north of Mare Serenitatis. It lies to the south-southwest of the prominent crater Eudoxus, and to the east-northeast of Calippus....
, to the northwest of the Mare Serenitatis
Mare Serenitatis
Mare Serenitatis is a lunar mare that sits just to the east of Mare Imbrium on the Moon.It is located within the Serenitatis basin, which is of the Nectarian epoch. The material surrounding the mare is of the Lower Imbrian epoch, while the mare material is of the Upper Imbrian epoch...
.
The outer rim of Calippus has an irregular appearance, with outward bulges to the northeast and particularly to the west where there is an interior shelf of slumped material. The exterior has a slight rampart that is surrounded by the rugged terrain of the mountain range. Within the sharp-sided interior walls is a rough and irregular interior floor.
To the southeast of this crater, on the edge of the Mare Serenitatis, is an arcing rille
Rille
Rille is typically used to describe any of the long, narrow depressions in the lunar surface that resemble channels. Typically a rille can be up to several kilometers wide and hundreds of kilometers in length...
designated Rima Calippus. This cleft follows a path to the northeast for a length of about 40 kilometers.
Satellite craters
By convention these features are identified on lunar maps by placing the letter on the side of the crater mid-point that is closest to Calippus.| Calippus | Latitude | Longitude | Diameter |
|---|---|---|---|
| A | 37.0° N | 7.9° E | 16 km |
| B | 36.0° N | 10.0° E | 7 km |
| C | 39.6° N | 9.1° E | 40 km |
| D | 36.3° N | 11.3° E | 4 km |
| E | 38.9° N | 11.9° E | 5 km |
| F | 40.5° N | 10.0° E | 6 km |
| G | 41.3° N | 11.5° E | 4 km |