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Calippus (crater)

From Wikipedia, the free encyclopedia

Calippus area with mineral postprocessing
Calippus
Mosaic of Lunar Orbiter 4 images
Coordinates38°54′N 10°42′E / 38.9°N 10.7°E / 38.9; 10.7
Diameter32 km
Depth2.7 km
Colongitude350° at sunrise
EponymCallippus

Calippus is a small lunar impact crater that is located on the eastern edge of the rugged Montes Caucasus mountain range in the northern part of the Moon. It was named after Greek astronomer Callippus of Cyzicus.[1] 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.

Satellite craters

Calippus 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 Calippus.

Lunar Orbiter 5 image of Rima Calippus
Location of 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

References

  1. ^ "Calippus (crater)". Gazetteer of Planetary Nomenclature. USGS Astrogeology Research Program.
This page was last edited on 19 April 2023, at 04:35
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