Back (crater)
Encyclopedia
Back is a small lunar
impact crater
that is located near the eastern limb of the Moon
. It lies on the northwest edge of the Mare Smythii
, and the northeast rim is adjacent to the crater Schubert
. To the west is Jenkins
, and to the southwest is the Weierstrass
–Van Vleck
crater pair. The crater Back is nearly circular, with narrow, sharp-edged outer walls that are not significantly worn.
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...
impact 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 is located near the eastern limb of the Moon
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...
. It lies on the northwest edge of the Mare Smythii
Mare Smythii
Mare Smythii is a lunar mare located along the equator on the easternmost edge of the lunar near side. The Smythii basin where the mare is located is of the Pre-Nectarian epoch, while the surrounding features are of the Nectarian system...
, and the northeast rim is adjacent to the crater Schubert
Schubert (lunar crater)
Schubert is a lunar impact crater that lies near the eastern limb of the Moon's near side. The crater is located to the northwest of the Mare Smythii, and southwest of the prominent crater Neper...
. To the west is Jenkins
Jenkins (crater)
Jenkins is a lunar crater that lies along the equator of the Moon, near the eastern limb. It is attached to the eastern rim of the slightly larger crater Schubert X, intruding somewhat into the interior. The crater Nobili is likewise attached to the western rim of Schubert X and intrudes slightly...
, and to the southwest is the Weierstrass
Weierstrass (crater)
Weierstrass is a small lunar crater that is attached to the northern rim of the walled plain Gilbert, in the eastern part of the Moon. It also lies very near the crater Van Vleck, a similar formation just to the southeast that is almost attached to the outer rim...
–Van Vleck
Van Vleck (crater)
Van Vleck is a lunar impact crater that is located near the northeastern rim of the walled plain Gilbert, to the west of the Mare Smythii. The similar crater Weierstrass is nearly joined to the northwestern rim of Van Vleck...
crater pair. The crater Back is nearly circular, with narrow, sharp-edged outer walls that are not significantly worn.