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Neumayer is a
Neumayer is a lunar
Lunar most commonly means "of or relating to the Moon".
Lunar may also refer to:
Arts and entertainment
* ''Lunar'' (series), a series of video games
* "Lunar" (song), by David Guetta
* "Lunar", a song by Priestess from the 2009 album ''Prior t ...
impact crater
An impact crater is a depression (geology), depression in the surface of a solid astronomical body formed by the hypervelocity impact event, impact of a smaller object. In contrast to volcanic craters, which result from explosion or internal c ...
that lies near the southern limb of the Moon
The Moon is Earth's only natural satellite. It Orbit of the Moon, orbits around Earth at Lunar distance, an average distance of (; about 30 times Earth diameter, Earth's diameter). The Moon rotation, rotates, with a rotation period (lunar ...
. At this location the crater appears much foreshortened and can only be observed during favorable libration
In lunar astronomy, libration is the cyclic variation in the apparent position of the Moon that is perceived by observers on the Earth and caused by changes between the orbital and rotational planes of the moon. It causes an observer to see ...
s. It is attached to the southeastern rim of the slightly larger crater Helmholtz
Hermann Ludwig Ferdinand von Helmholtz (; ; 31 August 1821 – 8 September 1894; "von" since 1883) was a German physicist and physician who made significant contributions in several scientific fields, particularly hydrodynamic stability. The ...
. To the south-southwest is the crater Demonax, and east-southeast is Hale.
This is a worn crater formation with features that have been softened and rounded by a history of minor impacts. But the rim remains intact and has not been significantly reshaped or indented by notable craters. The only crater of note within the rim is a small craterlet on the floor near the northern rim. There are much smaller craters scattered across the nearly flat and level floor, but no significant ridges or a central peak. In short, this crater appears as just an old depression in the surface.
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 Neumayer.References
* * * * * * * * * * * * {{refend Impact craters on the Moon