Eijkman (crater)
Encyclopedia
Eijkman is a lunar
impact crater
that is located on the far side of the Moon
's southern hemisphere
. It lies about a half crater diameter to the southeast of the larger crater Lemaître
. To the south-southwest is the crater Crommelin
, and to the northeast is Fizeau
.
The rim of this crater is well-defined and has not been significantly worn down by impacts. Nevertheless there are a few tiny craterlets along the edge and a small craterlet along the northern inner wall. The inner walls display some minor terracing along the northwestern edge. Near the mid-point of the crater interior floor is a horseshoe-shaped central peak formation, with the open end pointing towards the south.
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...
's 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...
. It lies about a half crater diameter to the southeast of the larger crater Lemaître
Lemaître (crater)
Lemaître is a lunar impact crater that is located on the southern hemisphere on the far side of the Moon. It lies to the south of the older crater Minkowski, and north of Crommelin. To the east-southeast lies the crater Eijkman....
. To the south-southwest is the crater Crommelin
Crommelin (lunar crater)
Crommelin is an ancient lunar crater that is located in the vicinity of the south pole of the Moon, on the far side. It lies to the north of the large crater Zeeman, and to the east-northeast of Numerov....
, and to the northeast is Fizeau
Fizeau (crater)
Fizeau is a prominent lunar impact crater that is located on the far side of the Moon, in the southern hemisphere. Nearby craters of note include Minkowski to the west-northwest, and Eijkman to the southwest....
.
The rim of this crater is well-defined and has not been significantly worn down by impacts. Nevertheless there are a few tiny craterlets along the edge and a small craterlet along the northern inner wall. The inner walls display some minor terracing along the northwestern edge. Near the mid-point of the crater interior floor is a horseshoe-shaped central peak formation, with the open end pointing towards the south.
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 Eijkman.| Eijkman | Latitude | Longitude | Diameter |
|---|---|---|---|
| D | 62.3° S | 136.9° W | 25 km |