Coordinates | 22°24′S8°30′W / 22.4°S 8.5°W Coordinates: 22°24′S8°30′W / 22.4°S 8.5°W |
---|---|
Diameter | 17 km |
Depth | 3.5 km |
Colongitude | 9° at sunrise |
Eponym | William R. Birt |
Birt is a lunar impact crater located in the eastern half of the Mare Nubium and west of the Rupes Recta. It was named after British selenographer William R. Birt. [1]
Birt is a bowl-shaped formation with a raised rim, slightly intersected along the southeast edge by the much smaller crater Birt A. To the west of Birt, a rille named Rima Birt runs north-northwest in an arc from Birt F to Birt E.
By convention these features are identified on lunar maps by placing the letter on the side of the crater midpoint that is closest to Birt.
Birt | Latitude | Longitude | Diameter |
---|---|---|---|
A | 22.5° S | 8.2° W | 7 km |
B | 22.2° S | 10.2° W | 5 km |
C | 23.7° S | 8.3° W | 2 km |
D | 21.0° S | 9.8° W | 3 km |
E | 20.7° S | 9.6° W | 5 km |
F | 22.3° S | 9.1° W | 3 km |
G | 23.1° S | 8.2° W | 2 km |
H | 23.0° S | 9.1° W | 2 km |
J | 23.0° S | 9.4° W | 2 km |
K | 22.4° S | 9.7° W | 2 km |
L | 21.6° S | 9.3° W | 3 km |
Thebit is a lunar impact crater located on the southeast shore of Mare Nubium. To the north-northwest is the crater Arzachel, and Purbach lies to the south-southwest. To the southwest is the flooded remnants of Thebit P, which is actually larger in diameter than Thebit itself.
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