Poczobutt (crater)
Encyclopedia
Poczobutt is a large lunar
impact crater
that is located on the far side of the Moon
, just beyond the northwestern limb in an area occasionally brought into sight due to libration
effects. This is a damaged formation that is partly overlain by several named craters. Across the rim to the north-northeast is the crater Smoluchowski
. The crater Zsigmondy
overlies the northeastern rim, and Omar Khayyam
is located in the western part of Poczobutt's interior.
Little of the outer rim of this crater remains intact, and what survives is worn and eroded. The outer rim now forms an irregular ring of peaks, broken in several locations by small craters. The most intact portion of the rim is a small arc along the eastern side. Likewise much of the interior floor is irregular due to overlying impacts or their ejecta. However there is a level plain in the eastern half of the interior that is almost flat and featureless. This region is marked only by a few low ridges around the fringes and some tiny craterlets. A small crater at the southern edge of this plain has a flooded, featureless interior.
Most of the crater formations associated with Poczobutt are almost as eroded as the main crater. However Poczobutt H, along the outer rim to the northeast, has a sharp, well-defined rim, some terraces along the inner wall, and a higher albedo
compared to the surrounding terrain
.
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 on the far side 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 beyond the northwestern limb in an area occasionally brought into sight due to libration
Libration
In astronomy, libration is an oscillating motion of orbiting bodies relative to each other, notably including the motion of the Moon relative to Earth, or of Trojan asteroids relative to planets.-Lunar libration:...
effects. This is a damaged formation that is partly overlain by several named craters. Across the rim to the north-northeast is the crater Smoluchowski
Smoluchowski (crater)
Smoluchowski is a lunar impact crater on the far side of the Moon. It lies in the part of the lunar surface that is sometimes brought into view of the Earth during periods of favorable libration and illumination from sunlight, but at such times little detail can be seen as the crater is observed...
. The crater Zsigmondy
Zsigmondy (crater)
Zsigmondy is a lunar crater located beyond the northwestern limb on the far side of the Moon. Attached to the southeastern rim of the crater is the crater Omar Khayyam, which lies within the much larger Poczobutt. Farther to the east, along the north rim of Poczobutt, is Smoluchowski.The rim of...
overlies the northeastern rim, and Omar Khayyam
Omar Khayyam (crater)
Omar Khayyam is a lunar crater that is located just beyond the northwestern limb of the Moon, on the far side from the Earth. It lies in a region of the surface that is sometimes brought into view of the Earth due to libration, and under favorable lighting it can be viewed from the edge...
is located in the western part of Poczobutt's interior.
Little of the outer rim of this crater remains intact, and what survives is worn and eroded. The outer rim now forms an irregular ring of peaks, broken in several locations by small craters. The most intact portion of the rim is a small arc along the eastern side. Likewise much of the interior floor is irregular due to overlying impacts or their ejecta. However there is a level plain in the eastern half of the interior that is almost flat and featureless. This region is marked only by a few low ridges around the fringes and some tiny craterlets. A small crater at the southern edge of this plain has a flooded, featureless interior.
Most of the crater formations associated with Poczobutt are almost as eroded as the main crater. However Poczobutt H, along the outer rim to the northeast, has a sharp, well-defined rim, some terraces along the inner wall, and a higher albedo
Albedo
Albedo , or reflection coefficient, is the diffuse reflectivity or reflecting power of a surface. It is defined as the ratio of reflected radiation from the surface to incident radiation upon it...
compared to the surrounding terrain
Terrain
Terrain, or land relief, is the vertical and horizontal dimension of land surface. When relief is described underwater, the term bathymetry is used...
.
Satellite craters
By convention these features are identified on lunar maps by placing the letter on the side of the crater mid-point that is closest to Poczobutt.| Poczobutt | Latitude | Longitude | Diameter |
|---|---|---|---|
| J | 56.6° N | 96.8° W | 24 km |
| R | 56.0° N | 103.5° W | 39 km |