Eimmart is a lunar

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 near the east-northeastern limb 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...

, to the northeast of the Mare Crisium

Mare Crisium

Mare Crisium is a lunar mare located in the Moon's Crisium basin, just northeast of Mare Tranquillitatis. This basin is of the Pre-Imbrian period, 4.55 to 3.85 billion years ago. This mare is in diameter, and 176,000 km2 in area. It has a very flat floor, with a ring of wrinkled ridges...

. The northern and eastern outer rim of this crater borders on the narrow Mare Anguis

Mare Anguis

Mare Anguis is a lunar mare located on the near side of the Moon, about 150 kilometers in diameter. Located within the Crisium basin, Mare Anguis is a part of the Nectarian System, meaning that it was formed during the Nectarian time period. Like most mare, the surface of Mare Anguis is dark,...

. To the northwest of Eimmart are the smaller crater Delmotte

Delmotte (crater)

Delmotte is a small lunar crater that lies just to the east of the much larger crater Cleomedes, and to the north of the Mare Crisium, in the northeastern part of the Moon...

 and the prominent Cleomedes

Cleomedes (crater)

Cleomedes is a prominent lunar crater located in the northeast part of the visible Moon, to the north of Mare Crisium. It is surrounded by rough ground with multiple crater impacts. The irregular crater Tralles intrudes into the northwest rim. To the east is Delmotte...

.

The rim of this crater has been lightly eroded, especially along the south-southeastern portion, but most of the edge remains intact. The small crater Eimmart A lies along the eastern rim, and is surrounded by a skirt of 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...

 material, particularly to the south and west across the interior of Eimmart. The interior floor is relatively level, and is marked by the ray material

Ray system

A ray system comprises radial streaks of fine ejecta thrown out during the formation of an impact crater, looking a bit like many thin spokes coming from the hub of a wheel. The rays can extend for lengths up to several times the diameter of their originating crater, and are often accompanied by...

from Eimmart A.

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 Eimmart.

Eimmart	Latitude	Longitude	Diameter
A	24.0° N	65.7° E	7 km
B	21.4° N	66.5° E	11 km
C	22.4° N	61.2° E	24 km
D	23.0° N	69.1° E	11 km
F	23.3° N	61.9° E	8 km
G	25.5° N	64.8° E	14 km
H	22.1° N	64.4° E	16 km
K	20.2° N	67.6° E	13 km