Emden (crater)
Encyclopedia
Emden is a lunar
crater
that is located in the northern hemisphere
on the far side of the Moon
. It is named after Jacob Robert Emden
(1862-1940).
The crater lies to the northwest of the larger crater Rowland
, and to the east-northeast of Tikhov
. It has been heavily damaged by subsequent impacts, leaving the rim worn and irregular and the interior partly covered by craters. The western half of the rim in particular is heavily damaged, with almost the entire edge and inner wall covered by overlapping craters. The most prominent of these is a crater along the southern wall. There is a merged crater pair on the western part of the interior floor and a joined crater pair on the northeast floor. The most intact area of floor is in the southeast, although even here the surface is pitted by multiple tiny craterlets.
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 is located in the northern 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 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...
. It is named after Jacob Robert Emden
Robert Emden
Jacob Robert Emden was a Swiss astrophysicist and meteorologist. He was born in St. Gallen, Switzerland. In 1907 he became associate professor of physics and meteorology at the Technical University of Munich...
(1862-1940).
The crater lies to the northwest of the larger crater Rowland
Rowland (crater)
Rowland is a large lunar crater that is located in the northern part of the Moon, on the far side from the Earth. This is an old, worn formation that is overlain by a number of smaller craters. The most notable of these is Rowland Y, which is attached to the inner wall along the north-northwestern...
, and to the east-northeast of Tikhov
Tikhov (lunar crater)
Tikhov is an eroded lunar impact crater on the Moon's far side. It is nearly attached to the east-southeastern outer rim of the larger crater Avogadro...
. It has been heavily damaged by subsequent impacts, leaving the rim worn and irregular and the interior partly covered by craters. The western half of the rim in particular is heavily damaged, with almost the entire edge and inner wall covered by overlapping craters. The most prominent of these is a crater along the southern wall. There is a merged crater pair on the western part of the interior floor and a joined crater pair on the northeast floor. The most intact area of floor is in the southeast, although even here the surface is pitted by multiple tiny craterlets.
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 Emden.| Emden | Latitude | Longitude | Diameter |
|---|---|---|---|
| D | 64.4° N | 171.1° W | 47 km |
| F | 63.5° N | 171.1° W | 20 km |
| M | 61.3° N | 177.0° W | 25 km |
| U | 64.7° N | 177.9° E | 38 km |
| V | 65.8° N | 177.5° E | 35 km |
| W | 66.4° N | 178.3° E | 25 km |