Eudoxus (lunar crater)

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Eudoxus crater 4103 h2.jpg
Coordinates 44°18′N 16°18′E / 44.3°N 16.3°E / 44.3; 16.3Coordinates: 44°18′N 16°18′E / 44.3°N 16.3°E / 44.3; 16.3
Diameter 67 km
Depth 3.4 km
Colongitude 344° at sunrise
Eponym Eudoxus of Cnidus

Eudoxus is a prominent lunar impact crater that lies to the east of the northern tip of the Montes Caucasus range, and is named after the Greek astronomer Eudoxus of Cnidus. At this location, on Earth, the crater appears nearly oval due to foreshortening, but the crater is actually nearly circular. It is located to the south of the prominent crater Aristoteles in the northern regions of the visible Moon. To the south is the ruined formation of Alexander, and the small crater Lamèch lies about 50 southwest or less than a crater diameter.

The rim of Eudoxus has a series of terraces on the interior wall, and slightly worn ramparts about the exterior. It lacks a single central peak, but has a cluster of low hills about the midpoint of the floor. The remainder of the interior floor is relatively level. Eudoxus has a ray system, and is consequently mapped as part of the Copernican System.[1]

From that location the Earth would appear in the lunar sky at 46 degrees above the horizon towards the south, in the east, it is seen more than 16 degrees towards the east.

Eudoxus Crater and its satellite from a LRO image, Eudoxus J is not photoed here as it is nearly further southeast
Eudoxus 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

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 Eudoxus. Eudoxus A is to the northeast, Eudoxos B is north-northeast, Eudoxus D is nearly 50 km southwest just more than that crater's diameter north of Lamèch, Eudoxus E is to the east, Eudoxus G is to the northeast, Eudoxus J is further south-southeast and Eudoxus V is to the southeast.

Eudoxus Latitude Longitude Diameter
A 45.8° N 20.0° E 14 km
B 45.6° N 17.4° E 8 km
D 43.3° N 13.2° E 10 km
E 44.3° N 21.1° E 6 km
G 45.4° N 18.8° E 7 km
J 40.8° N 20.2° E 4 km
U 43.9° N 20.3° E 4 km
V 43.1° N 18.9° E 4 km


  1. ^ The geologic history of the Moon, 1987, Wilhelms, Don E.; with sections by McCauley, John F.; Trask, Newell J. USGS Professional Paper: 1348. Plate 11: Copernican System (online)