Rheasilvia (Vesta)

Named after Rheasilvia - Rhea Silvia, Roman vestal virgin, mother of Romulus and Remus (c. 770 B.C.).

A crater is a circular depression likely created by an impact event. On Vesta they are named after names historically associated with the Roman goddess Vesta (vestal virgins, people associated with vestal virgins) and famous Roman women.