Harlan (Moon)

Named after Harlan James Smith - American astronomer (1924-1991).

Harlan is a lunar crater near the southeastern limb. It is located just to the northeast of the crater Marinus. To the northeast is the flooded walled plain Abel, and to the southeast is Mare Australe. This crater has a worn outer rim, with a crater attached to the northeastern rim and an irregular southern 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.