Sechenov 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...

 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...

 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 lies to the southwest of the huge walled plain Hertzsprung

Hertzsprung (crater)

Hertzsprung is an enormous lunar crater that is located on the far side of the Moon, beyond the western limb. In dimension, this formation is larger than several of the lunar mare areas on the near side. It lies in the northwestern fringe of the blast radius of the Mare Orientale impact basin...

, and to the east-southeast of the crater Timiryazev

Timiryazev (crater)

Timiryazev is a lunar impact crater that is located just to the east of the huge walled plain Korolev, on the far side of the Moon. It lies to the west-northwest of the crater Sechenov and north-northeast of Mechnikov....

. To the south-southeast of Sechenov lies Paschen

Paschen (crater)

Paschen is a lunar crater on the far side of the Moon. The relatively large satellite crater Paschen M partly overlies the southern rim of Paschen, and they nearly form a merged pair with only a section of irregular terrain along their common border. The smaller but well-formed crater Paschen S...

.

This crater has taken a moderate amount of wear and tear as a result of subsequent impacts. The outer rim is somewhat worn and uneven. There is a small crater intruding into the southwestern outer rim. A joined pair of small craters is located in the middle of the interior floor, and there is a small craterlet along the eastern base of the inner wall.

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 Sechenov.

Sechenov	Latitude	Longitude	Diameter
C	5.2° S	141.3° W	19 km
P	9.8° S	143.8° W	23 km