van Rhijn (Moon)

Named after Pieter Johannes Rhijn - Dutch astronomer (1886-1960).

Van Rhijn is an old lunar crater on the far side , in the northern hemisphere. It lies due south of the larger crater Störmer, and to the north-northeast of De Moraes. The outer rim of this crater has been deeply worn and eroded by impacts, with smaller craters intruding into the northeast, northwest, and southeastern parts of the rim. The remaining features of the rim have been softened and rounded, leaving the crater little more than a depression in the surface. (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.