Zasyadko 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...

 located to the northeast of Mare Smythii

Mare Smythii

Mare Smythii is a lunar mare located along the equator on the easternmost edge of the lunar near side. The Smythii basin where the mare is located is of the Pre-Nectarian epoch, while the surrounding features are of the Nectarian system...

. It lies beyond the eastern lunar limb in an area that is only visible during favorable libration

Libration

In astronomy, libration is an oscillating motion of orbiting bodies relative to each other, notably including the motion of the Moon relative to Earth, or of Trojan asteroids relative to planets.-Lunar libration:...

s. It is located entirely within the crater Babcock

Babcock (crater)

Babcock is a lunar crater that is located on the far side of the Moon. It lies on the northeastern edge of Mare Smythii, to the southeast of Mare Marginis. To the south of Babcock is the crater Purkynĕ, and to the east-northeast lies Erro...

. To the southwest is McAdie

McAdie (crater)

McAdie is a flooded lunar crater that is located along the northeastern edge of Mare Smythii, on the far side of the Moon. It lies just to the southwest of the larger, flooded Babcock...

. Zasyadko is a bowl-shaped formation with a relatively small interior floor. It is not significantly eroded along the rim.