Thebit 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 ...

located on the southeast shore of

Mare Nubium Mare Nubium (Latin ''nūbium'', the "sea of clouds") is a lunar mare in the Nubium basin on the Moon's near side. The mare is located just to the southeast of Oceanus Procellarum. Formation The basin containing Mare Nubium is believed to ha ...

. To the north-northwest is the crater Arzachel, and Purbach lies to the south-southwest. To the southwest is the flooded remnants of Thebit P, which is actually larger in diameter than Thebit itself. The rim of Thebit is generally circular in outline, with a double-notch in the southwest wall. A prominent bowl-shaped crater, Thebit A, lies across the west-northwestern rim. The west-northwestern rim of this crater is overlain in turn by the even smaller Thebit L. Together this forms an elegant arrangement that makes Thebit relatively simple to identify. The floor of Thebit crater is rough and has no central peak. The rim displays a

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 ...

, and has a hilly outer

rampart Rampart may refer to: * Rampart (fortification), a defensive wall or bank around a castle, fort or settlement Rampart may also refer to: * "O'er the Ramparts We Watched" is a key line from "The Star-Spangled Banner", the national anthem of the ...

. Due west of Thebit is a 110-kilometer-long ridge named Rupes Recta, which rises to 240 meters. This linear feature runs north-northwest to south-southeast across the

Name

Thebit is a Latinization of the name of the 9th century Iraqi astronomer and mathematician Thābit ibn Qurra.

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 Thebit.

Ancient Thebit

Thebit lies on the eastern rim of a much older, 220-km diameter crater informally known as "Ancient Thebit." Its eroded rim is still present to the northwest and southwest of Thebit, and unnamed wrinkle ridges in Mare Nubium may correlate with the western rim that is now buried by mare lava. The Rupes Recta,

Birt Birt is a surname. Notable people with the surname include: * Charlie Birt (born 1942), Canadian politician * Fred Birt (1886–1956), Welsh rugby union player * Jill Birt (), keyboardist in Australian band The Triffids * John Birt (footballer) ...

, and Rima Birt are all within Ancient Thebit. Ancient Thebit (LRO)

References

* * * * * * * * * * *

External links

Thebit at The Moon Wiki
* * {{cite web, last = Wood , first = Chuck , date = August 20, 2009 , url = http://lpod.wikispaces.com/August+20%2C+2009 , title = Succession , publisher = Lunar Photo of the Day Impact craters on the Moon

Name

Satellite craters

Ancient Thebit

See also

References

External links