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.^[1]

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