Catharina (Moon)

Named after St. Catherine of Alexandria Catharina - Greek theologian, philosopher (unkn-c. 307).

Catharina is an ancient lunar impact crater located in the southern highlands. It lies in a rugged stretch of land. To the west-northwest is the crater Tacitus, and the lava-flooded Beaumont lies to the east along the shore of Mare Nectaris. To the south-southeast is Polybius. (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.