Perrine (Moon)

Named after Charles Dillon Perrine - American astronomer (1867-1951).

Perrine is a lunar crater on the northern hemisphere on the far side. It lies to the west of the large walled plain Landau, and to the northeast of the crater Charlier. To the north-northwest is the smaller Gullstrand. This is an unusual formation that forms part of a chain of connected craters. (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.