The Dirichlet–Jackson Basin is a

pre-Nectarian The pre-Nectarian period of the lunar geologic timescale runs from 4.533 billion years ago (the time of the initial formation of the Moon) to 3.920 billion years ago, when the Nectaris Basin was formed by a large impact. It is followed by the Necta ...

impact basin An impact crater is a depression in the surface of a solid astronomical body formed by the hypervelocity impact of a smaller object. In contrast to volcanic craters, which result from explosion or internal collapse, impact craters typically h ...

on the far side 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 ...

. It is named after the craters

Dirichlet Johann Peter Gustav Lejeune Dirichlet (; ; 13 February 1805 – 5 May 1859) was a German mathematician. In number theory, he proved special cases of Fermat's last theorem and created analytic number theory. In Mathematical analysis, analysis, h ...

(on the southeast margin) and

Jackson Jackson may refer to: Places Australia * Jackson, Queensland, a town in the Maranoa Region * Jackson North, Queensland, a locality in the Maranoa Region * Jackson South, Queensland, a locality in the Maranoa Region * Jackson oil field in Durham, ...

(northwest of the basin). It lies to the north of the similar-sized basin Korolev. The basin is not obvious on the lunar surface due to being obscured by subsequent impacts. It was confirmed by topographic mapping by the

Clementine A clementine (''Citrus × clementina'') is a tangor, a citrus fruit hybrid between a willowleaf mandarin orange ( ''C.'' × ''deliciosa'') and a sweet orange (''C. × sinensis''), named in honor of Clément Rodier, a French missionary who f ...

spacecraft in 2000. The existence of the basin was confirmed by the

GRAIL The Holy Grail (, , , ) is a treasure that serves as an important motif in Arthurian literature. Various traditions describe the Holy Grail as a cup, dish, or stone with miraculous healing powers, sometimes providing eternal youth or sustenanc ...

spacecraft. Craters within the basin include

Raimond Raimond is both a masculine given name and a surname. Notable people with the name include: Given name *Raimond Aumann (born 1963), German footballer * Raimond Beccarie de Pavie, Seigneur de Fourquevaux (1508–1574), French soldier, politician ...

, Bredikhin,

Mitra ''Mitra'' (Proto-Indo-Iranian language, Proto-Indo-Iranian: wikt:Reconstruction:Proto-Indo-Iranian/mitrás, ''*mitrás'') is the name of an Indo-Iranians#Religion, Indo-Iranian divinity that predates the Rigveda, Rigvedic Mitra (Hindu god), Mitrá ...

, and Henyey (adjacent to Dirichlet), as well as many satellite craters. Due south of the basin is Engel'gardt (and the Selenean summit). To the southwest are Lebedinskiy and Zhukovskiy, and McMath is to the northwest. To the northeast is

Mach The Mach number (M or Ma), often only Mach, (; ) is a dimensionless quantity in fluid dynamics representing the ratio of flow velocity past a Boundary (thermodynamic), boundary to the local speed of sound. It is named after the Austrian physi ...

, and to the southeast is Tsander. File:Dirichlet-Jackson basin topo.jpg, Topographic map File:Dirichlet-Jackson basin GRAIL gravity.jpg, Gravity map based on

External links

KAGUYA Taking Around 'Jackson'
HD video of

SELENE In ancient Greek mythology and Ancient Greek religion, religion, Selene (; , meaning "Moon")''A Greek–English Lexicon's.v. σελήνη is the goddess and personification of the Moon. Also known as Mene (), she is traditionally the daughter ...

crossing the basin and Jackson crater

References

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