Birt (crater)

Birt

The lunar crater Birt and its environs. Since this is a telescopic view, this image is inverted.
Coordinates 22°24′S 8°30′W / 22.4°S 8.5°W / -22.4; -8.5Coordinates: 22°24′S 8°30′W / 22.4°S 8.5°W / -22.4; -8.5
Diameter 17 km
Depth 3.5 km
Colongitude 9° at sunrise
Eponym William R. Birt
Birt crater and other features on the Moon, also Rima Birt - a slightly curved ~50 km long channel that starts and ends in a pit. Photo: Georgi Georgiev, Stara Zagora, Bulgaria. Since this is a telescopic view, this image is inverted.

Birt is a lunar impact crater located in the eastern half of the Mare Nubium and west of the Rupes Recta.

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.

Oblique view of Rupes Recta (left), Birt (center), and Rima Birt (right), from Apollo 16

Satellite craters

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

References

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  • Price, Fred W. (1988). The Moon Observer's Handbook. Cambridge University Press. ISBN 978-0-521-33500-3. 
  • Rükl, Antonín (1990). Atlas of the Moon. Kalmbach Books. ISBN 978-0-913135-17-4. 
  • Webb, Rev. T. W. (1962). Celestial Objects for Common Telescopes (6th revised ed.). Dover. ISBN 978-0-486-20917-3. 
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  • Wlasuk, Peter T. (2000). Observing the Moon. Springer. ISBN 978-1-85233-193-1. 
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