Sinas (Moon)

Named after Simon Sinas - Greek benefactor (1810-1876).

This is an isolated formation that is located very near the midpoint of the lunar mare. A wrinkle ridge intersects the east edge of the crater, and several lunar domes lie to the north. Nearby craters include Jansen and Carrel to the northwest, Aryabhata to the southeast, and Maskelyne to the south. (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.