Hopmann (crater)
Encyclopedia
Hopmann is a lunar
crater
that lies in the southern hemisphere
on the Moon
's far side. It is attached to the northern part of the large walled plain Poincaré
. Less than one crater diameter to the north-northwest is the crater Garavito
.
The outer rim of this crater has undergone some wear due to impact erosion. Still the inner walls possess some terrace structures along the southern edge. A small crater overlays the northern rim, and a pair of tiny craters line along the eastern edge.
The interior floor is relatively level and has a lower albedo
than the surrounding surface, giving it a slightly dark appearance. There are some low ridges near the crater mid-point, and a double-ringed rim to the south-southeast of the center. A tiny craterlet to the northwest of the mid-point is surrounded by a small skirt of higher albedo material, giving it the appearance of a white patch.
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 southern hemisphere
Sphere
A sphere is a perfectly round geometrical object in three-dimensional space, such as the shape of a round ball. Like a circle in two dimensions, a perfect sphere is completely symmetrical around its center, with all points on the surface lying the same distance r from the center point...
on 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...
's far side. It is attached to the northern part of the large walled plain Poincaré
Poincaré (crater)
Poincaré is a large lunar impact basin that lies in the southern hemisphere on the far side of the Moon. Most of the formation has been heavily eroded by subsequent impacts, leaving a battered formation with only rugged remnants of the original outer rim to the west.The eastern half has been...
. Less than one crater diameter to the north-northwest is the crater Garavito
Garavito (crater)
Garavito is a lunar crater that is located in the southern hemisphere on the Moon's far side. It lies to the north-northwest of the huge walled plain Poincaré, and to the west of the crater Chrétien. It takes its name in honor of the Colombian astronomer Julio Garavito Armero.This crater has a worn...
.
The outer rim of this crater has undergone some wear due to impact erosion. Still the inner walls possess some terrace structures along the southern edge. A small crater overlays the northern rim, and a pair of tiny craters line along the eastern edge.
The interior floor is relatively level and has a lower 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...
than the surrounding surface, giving it a slightly dark appearance. There are some low ridges near the crater mid-point, and a double-ringed rim to the south-southeast of the center. A tiny craterlet to the northwest of the mid-point is surrounded by a small skirt of higher albedo material, giving it the appearance of a white patch.
External links
- ESA, "SMART-1’s view of Crater Hopmann: on the shoulder of a giant", May 3, 2006.