Byrgius (crater)

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Byrgius crater 4168 h1.jpg
Lunar Orbiter 4 image of Byrgius, with Byrgius A at right, and Byrgius D in upper left
Coordinates24°42′S 65°18′W / 24.7°S 65.3°W / -24.7; -65.3Coordinates: 24°42′S 65°18′W / 24.7°S 65.3°W / -24.7; -65.3
Diameter87 km
Depth4.6 km
Colongitude65° at sunrise
EponymJoost Bürgi

Byrgius is a lunar impact crater located in the western part of the Moon, near the limb. As a result, Byrgius appears strongly oval in form due to foreshortening. To the northwest is the nearly ruined crater Lamarck. The rim of Byrgius is worn and eroded, with Byrgius A overlying the eastern rim and Byrgius D lying across the northwest. The floor is relatively flat and undistinguished by significant craterlets. Byrgius A possesses its own ray system that extends for over 400 kilometres.

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 Byrgius.

Byrgius Latitude Longitude Diameter
A 24.5° S 63.7° W 19 km
B 23.9° S 60.8° W 23 km
D 24.1° S 67.1° W 27 km
E 23.5° S 66.2° W 18 km
H 23.7° S 62.4° W 27 km
K 23.0° S 61.8° W 14 km
N 22.3° S 63.1° W 20 km
P 22.6° S 64.1° W 19 km
R 26.5° S 60.7° W 7 km
S 26.2° S 61.4° W 43 km
T 25.1° S 61.5° W 5 km
U 25.8° S 67.2° W 13 km
V 26.0° S 67.8° W 9 km
W 26.1° S 68.5° W 14 km
X 25.7° S 65.4° W 6 km


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