Birt (crater)

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.

Birt

Coordinates	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

The crater area in a Selenochromatic format Image (Si)

The crater Birt (lower left centre) 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 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

• Andersson, L. E.; Whitaker, E. A. (1982). NASA Catalogue of Lunar Nomenclature. NASA RP-1097.
• Bussey, B.; Spudis, P. (2004). The Clementine Atlas of the Moon. New York: Cambridge University Press. ISBN 978-0-521-81528-4.
• Cocks, Elijah E.; Cocks, Josiah C. (1995). Who's Who on the Moon: A Biographical Dictionary of Lunar Nomenclature. Tudor Publishers. ISBN 978-0-936389-27-1.
• McDowell, Jonathan (July 15, 2007). "Lunar Nomenclature". Jonathan's Space Report. Retrieved 2007-10-24.
• Menzel, D. H.; Minnaert, M.; Levin, B.; Dollfus, A.; Bell, B. (1971). "Report on Lunar Nomenclature by the Working Group of Commission 17 of the IAU". Space Science Reviews. 12 (2): 136–186. Bibcode:1971SSRv...12..136M. doi:10.1007/BF00171763. S2CID 122125855.
• Moore, Patrick (2001). On the Moon. Sterling Publishing Co. ISBN 978-0-304-35469-6.
• 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.
• Whitaker, Ewen A. (1999). Mapping and Naming the Moon. Cambridge University Press. ISBN 978-0-521-62248-6.
• Wlasuk, Peter T. (2000). Observing the Moon. Springer. ISBN 978-1-85233-193-1.

External links

• Wood, Chuck (2006-08-08). "Odd Interiors". Lunar Photo of the Day. Retrieved 2017-01-25.