Segers is a small 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 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 lies about one crater diameter to the east of the much larger crater Millikan

Millikan (crater)

Millikan is a lunar impact crater in the northern hemisphere of the Moon's far side. It is located to the north of the crater H. G. Wells, and to the southwest of von Békésy....

. To the north of Segers is von Békésy

Von Békésy (crater)

Von Békésy is a worn lunar crater on the far side of the Moon. It is located in the northern latitudes, behind the northeastern limb of the Moon as seen from the Earth. This is a relatively isolated crater formation, the closest named crater being Volterra, just over one crater diameter to the...

.

Segers is unusual in that all of its satellite craters have a larger diameter. It is roughly circular in outline, with a bowl-shaped interior. The rim is not significantly worn due to impact erosion, and the edge remains sharp. The inner wall has a relatively high 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...

, giving the crater a bright 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 Segers.

Segers	Latitude	Longitude	Diameter
H	46.7° N	129.0° E	29 km
M	44.5° N	127.6° E	54 km
N	44.0° N	127.5° E	27 km