Neison 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 to the south of the crater

Meton Meton of Athens (; ''gen''.: Μέτωνος) was a Greek mathematician, astronomer, geometer, and engineer who lived in Athens in the 5th century BC. He is best known for calculations involving the eponymous 19-year Metonic cycle, which he int ...

, in the northern part 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 ...

. The high latitude of this crater means that the crater appears foreshortened when viewed from the

Earth Earth is the third planet from the Sun and the only astronomical object known to Planetary habitability, harbor life. This is enabled by Earth being an ocean world, the only one in the Solar System sustaining liquid surface water. Almost all ...

, having an elliptical appearance even though it is nearly circular in shape. The outer rim of this crater has been heavily worn and eroded by smaller impacts, leaving only a low, uneven ridge surrounding the interior. There are several breaks in this rim, and the inner edge is notched by impacts. The interior has been resurfaced, covering the floor of many of these peripheral impacts. The result is a level plain within the shallow rim, with clefts to the southwest, southeast, and east-northeast. Only a few tiny craterlets mark this otherwise featureless floor.

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 Neison.

References

* * * * * * * * * * * * {{refend Impact craters on the Moon