Pitatus (Moon)

Named after Pitati, Pietro Pitatus - Italian astronomer, mathematician (unkn.-fl. c. 1500).

Joined to the northwest rim is the crater Hesiodus, and the two are joined by a narrow cleft. The complex wall is heavily worn, and has been encroached by lava flows. The rim is lowest to the north, where the lava almost joins the Mare Nubium. (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.