Patsaev (Moon)

Named after Viktor Ivanovich Patsaev - Soviet engineer, cosmonaut (1933-1971).

Patsaev is a lunar crater that lies on the far side , to the northeast of the prominent crater Tsiolkovskiy. To the northwest is the smaller crater Lander. This is a heavily damaged crater that now appears as little more than an irregular depression in the surface. Both the outer rim and interior floor are streaked by jumbled ridges of material that are radial to Tsiolkovskiy. (wikipedia entry)

A crater is a circular depression likely created by an impact event. On the Moon they are named after deceased scientists, polar explorers, astronauts or cosmonauts.