Beketov (crater)
Encyclopedia
Beketov is a small lunar
crater
that lies in the northern reaches of the Mare Tranquillitatis
. To the south is the ghost crater Jansen R. Northeast of Beketov, along the edge of the mare
, is the crater Vitruvius
. Beketov was previously designated Jansen C before being named by the IAU
. The flooded crater Jansen
itself lies to the south.
Moon
The Moon is Earth's only known natural satellite,There are a number of near-Earth asteroids including 3753 Cruithne that are co-orbital with Earth: their orbits bring them close to Earth for periods of time but then alter in the long term . These are quasi-satellites and not true moons. For more...
crater
Impact crater
In the broadest sense, the term impact crater can be applied to any depression, natural or manmade, resulting from the high velocity impact of a projectile with a larger body...
that lies in the northern reaches of the Mare Tranquillitatis
Mare Tranquillitatis
Mare Tranquillitatis is a lunar mare that sits within the Tranquillitatis basin on the Moon. The mare material within the basin consists of basalt formed in the intermediate to young age group of the Upper Imbrian epoch. The surrounding mountains are thought to be of the Lower Imbrian epoch, but...
. To the south is the ghost crater Jansen R. Northeast of Beketov, along the edge of the mare
Lunar mare
The lunar maria are large, dark, basaltic plains on Earth's Moon, formed by ancient volcanic eruptions. They were dubbed maria, Latin for "seas", by early astronomers who mistook them for actual seas. They are less reflective than the "highlands" as a result of their iron-rich compositions, and...
, is the crater Vitruvius
Vitruvius (crater)
Vitruvius is a small lunar impact crater that lies on the northern edge of the Mare Tranquillitatis. To the east is the crater Gardner, and to the northeast is Fabbroni. To the north-northwest is the elongated Mons Vitruvius mountain, and beyond is the valley where the Apollo 17 mission landed.The...
. Beketov was previously designated Jansen C before being named by the IAU
International Astronomical Union
The International Astronomical Union IAU is a collection of professional astronomers, at the Ph.D. level and beyond, active in professional research and education in astronomy...
. The flooded crater Jansen
Jansen (crater)
Jansen is lunar crater in the north part of the Mare Tranquillitatis. It is located to the east-southeast of the crater Plinius. The rim of Jansen is low and narrow, with a notch along the western edge. The interior is relatively level, which may indicate it has been covered by lava...
itself lies to the south.