Konstantinov (Moon)

Named after Konstantin Ivanovich Konstantinov - Russian rocketry scientist (1817-1871).

Konstantinov is a lunar impact crater that is located to the southeast of the Mare Moscoviense, on the far side. To the west is the smaller crater Nagaoka, and to the south-southeast is the small Van Gent. This is a moderately worn crater, particularly along the northeastern quadrant where multiple small craterlets lie along the inner wall. There is a pair of small craters on the interior floor along the eastern edge. (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.