Marth (lunar crater)
Encyclopedia
Marth is a small lunar
crater
located in the northwest part of the Palus Epidemiarum
. To the northwest is the crater Dunthorne
, and to the southwest lies Ramsden
. This feature lies in a system of rille
s named the Rimae Ramsden, and an interrupted branch passes only a few kilometers to the south of the rim.
Marth is unusual for having a double rim, with a smaller inner crater concentric to the outer rim. The smaller crater is located near the center of the larger rim, giving the feature a bullseye
appearance.
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...
located in the northwest part of the Palus Epidemiarum
Palus Epidemiarum
Palus Epidemiarum is a small lunar mare in the southwestern part of the Moon's near side. It lies to the southwest of Mare Nubium, and southeast of Mare Humorum...
. To the northwest is the crater Dunthorne
Dunthorne (crater)
Dunthorne is a small lunar impact crater that is located to the northwest of the small lunar mare called Palus Epidemiarum, in the southwest part of the Moon's near side. It lies to the southwest of the crater Campanus, and east of Vitello. Due south is Ramsden.This crater is roughly circular and...
, and to the southwest lies Ramsden
Ramsden (crater)
Ramsden is a lunar impact crater located on the western stretch of the Palus Epidemiarum. To the east-southeast is the crater Capuanus, and to the north lies Dunthorne....
. This feature lies in a system of rille
Rille
Rille is typically used to describe any of the long, narrow depressions in the lunar surface that resemble channels. Typically a rille can be up to several kilometers wide and hundreds of kilometers in length...
s named the Rimae Ramsden, and an interrupted branch passes only a few kilometers to the south of the rim.
Marth is unusual for having a double rim, with a smaller inner crater concentric to the outer rim. The smaller crater is located near the center of the larger rim, giving the feature a bullseye
Bullseye (target)
The bullseye, or bull's-eye, is the centre of a target , and by extension the name given to any shot that hits the bullseye...
appearance.
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 Marth.| Marth | Latitude | Longitude | Diameter |
|---|---|---|---|
| K | 29.9° S | 28.7° W | 3 km |