Rupes Recta [SEP] located on astronomical body
Rupes Recta
Rupes Recta is a linear fault on the Moon, in the southeastern part of the Mare Nubium at . The name is Latin for "straight cliff", although it is more commonly called the "Straight Wall". This is the most well-known escarpment on the Moon, and is a popular target for amateur astronomers.
When the sun illuminates the feature at an oblique angle at about day 8 of the Moon's orbit, the Rupes Recta casts a wide shadow that gives it the appearance of
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 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.
Satellite craters.
By convention these features are identified on lunar