{ Moons of Saturn }
Discovered by            S. A. Collins, D. Carlson
Date of Discovery        1980
Distance from Saturn     139,353 km
Radius                   74.0 × 50.0 × 34.0 km
Mass                     ???
Orbital Eccentricity     0.003
Orbital Inclination      0.0°
Orbital Period           0.6130 day
Rotational Period        ???
Density (gm/cm3)         ???

This strange moon is shaped like an American football. Performing the shepherding function on the inner side of Saturn's F ring, along with Pandora on the outer side, Prometheus has a low density, which probably means it is composed largely of ice and may be quite porous.

Like Pandora, not much else is known about Prometheus. It was discovered through imagery from Voyager 1.

Sources:
NASA.gov
space.com