Penelope is the fourth largest impact crater on Tethys, which is one of Saturn's moons. It is 208 kilometers wide, and is located near the equator in the center of trailing hemisphere of the moon at 10.8°S, 249.2°W. It is approximately opposite to the largest crater on Tethys—Odysseus. (wikipedia entry)
A crater is a circular depression likely created by an impact event. On Tethys they are named after people and places from Homer's Odyssey.
Image Source. Marker locations are approximate and may not always appear to align with image on map.