Peri-Banu (Enceladus)

Genie who marries Ahmad and helps him fulfill the demands of his father.

Peri-Banu is a crater in the northern hemisphere of Saturn's moon Enceladus. The western portion of the crater is largely absent, either buried or disrupted by the eastern margin of Samarkand Sulci. A large, dome-like structure occupies the interior of the crater, caused by infill of material from Samarkand Sulci or from viscous relaxation. (wikipedia entry)

A crater is a circular depression likely created by an impact event. On Enceladus they are named after people and places from Burton's Arabian Nights.