Phoebe (moon)
Ownership: UCP
System: Sol system
Phoebe orbits Saturn at a distance of 12 952 000 kilometers, and has a diameter of 220 km. It has an elliptical retrograde orbit which is inclined 30 degrees to the Saturnian plane. Its relative proportions of rock and ice is quite different from the other Saturnian moons - This suggests that Phoebe is likely a captured moon from the outer regions of the Sol system (the Kuiper Belt).
The moon is a rugged, heavily cratered body, with overlapping craters of varying sizes. This morphology suggests an old surface. There are many craters smaller than 1 km, indicating that projectiles probably smaller than 100 meters once pummeled Phoebe. Whether these objects were cometary or asteroidal in origin, or were the debris that resulted from impacts on other bodies within the Saturn system, is hotly debated. There is also variation in surface brightness across the body.
