Geissler (crater)
Encyclopedia
Geissler is a small lunar
impact crater
that lies on the northern floor of the much larger walled plain Gilbert
, near the eastern limb of the Moon
. Just to the northeast of this crater, attached to the outer rim of Gilbert, is the crater pair of Weierstrass
and Van Vleck
.
The rim of Geissler is nearly circular, with a slight outward bulge toward the northwest. The rim is sharp-edged and not notably worn. The inner walls are simple slopes that run down gradually to the small interior floor, which has a diameter about one third that of the crater. This formation is not significantly eroded, and is otherwise undistinguished.
This crater was formerly designated Gilbert D before being assigned a unique name by the IAU
.
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 lies on the northern floor of the much larger walled plain Gilbert
Gilbert (lunar crater)
Gilbert is a large lunar crater that lies near the eastern limb of the Moon. Due to its location this feature appears foreshortened when viewed from the Earth, limiting the amount of detail that can be observed...
, 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...
. Just to the northeast of this crater, attached to the outer rim of Gilbert, is the crater pair of 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...
and 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...
.
The rim of Geissler is nearly circular, with a slight outward bulge toward the northwest. The rim is sharp-edged and not notably worn. The inner walls are simple slopes that run down gradually to the small interior floor, which has a diameter about one third that of the crater. This formation is not significantly eroded, and is otherwise undistinguished.
This crater was formerly designated Gilbert D before being assigned a unique name 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...
.