Vetchinkin (Moon)

Named after Vladimir Petrovich Vetchinkin - Soviet physicist, engineer (1888-1950).

Vetchinkin is an eroded lunar impact crater. It is located to the west-northwest of the huge walled plain Mendeleev, on the far side. To the west-northwest lies the crater Meshcherskiy, and to the south-southeast lies Green. This crater is heavily worn and eroded, and little remains of the original outer rim. (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.