Lobachevskiy 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 circular depression in the surface of a solid astronomical object formed by the hypervelocity impact of a smaller object. In contrast to volcanic craters, which result from explosion or internal collapse, impact crater ...

that is located on the far side of the

Moon The Moon is Earth's only natural satellite. It is the fifth largest satellite in the Solar System and the largest and most massive relative to its parent planet, with a diameter about one-quarter that of Earth (comparable to the width of ...

, beyond the eastern limb. It was named after Russian mathematician

Nikolai Lobachevsky Nikolai Ivanovich Lobachevsky ( rus, Никола́й Ива́нович Лобаче́вский, p=nʲikɐˈlaj ɪˈvanəvʲɪtɕ ləbɐˈtɕɛfskʲɪj, a=Ru-Nikolai_Ivanovich_Lobachevsky.ogg; – ) was a Russian mathematician and geometer, kn ...

in 1961. This crater lies to the southeast of the larger crater Fleming. Less than a crater diameter to the east-northeast lies

Guyot In marine geology, a guyot (pronounced ), also known as a tablemount, is an isolated underwater volcanic mountain (seamount) with a flat top more than below the surface of the sea. The diameters of these flat summits can exceed .terrace Terrace may refer to: Landforms and construction * Fluvial terrace, a natural, flat surface that borders and lies above the floodplain of a stream or river * Terrace, a street suffix * Terrace, the portion of a lot between the public sidewalk an ...

features, along with some slumping along the upper edge. Near the midpoint of the interior floor is a pair of central peaks, with one to the southeast and the other to the northwest of the middle. To the east of these peaks is a relatively bright, high-

albedo Albedo (; ) is the measure of the diffuse reflection of solar radiation out of the total solar radiation and measured on a scale from 0, corresponding to a black body that absorbs all incident radiation, to 1, corresponding to a body that refl ...

patch that is most likely the result of a recent small impact. Two dark ribbons of material apparently emanate from the base of a small crater in the western wall of Lobachevskiy, and this was observed on the Apollo 16 mission. Prior to 1961 this crater was known as ''Crater 205''.Lunar Farside Chart (LFC-1A)
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Image:AS11-43-6450 Lobachevsky crater.jpg, Low-altitude oblique close-up from

Apollo 11 Apollo 11 (July 16–24, 1969) was the American spaceflight that first landed humans on the Moon. Commander Neil Armstrong and lunar module pilot Buzz Aldrin landed the Apollo Lunar Module ''Eagle'' on July 20, 1969, at 20:17 UTC, ...

Image:Lobachevskiy crater AS16-M-3001 ASU.jpg, Oblique Apollo 16 mapping camera image Image:Lobachevskiy crater AS16-M-1322.jpg, Oblique Apollo 16 mapping camera image File:Lobachevskiy crater wall ribbons AS16-P-5022.jpg, Small crater in the wall of Lobachevskiy with distinct flow lobes

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 Lobachevskiy.

References

* * * * * * * * * * * {{Commonscat Impact craters on the Moon