Prometheus
Prometheus information Average distance from Saturn: 139353 km (0.0009 AU) Equatorial radius: 74.0 x 50.0 x 34.0 km (Diameter: 148 km) Mass: 800000000000000000 kg Siderial orbit period (length of year): 0.6130 earth days Orbital eccentricity: 0.003 Orbital inclination to ecliptic: 0.0 degrees		Prometheus, Saturn XVI
Prometheus Prometheus was a Titan who stole fire from Olympus and gave it to humankind, for which Zeus punished him horribly; son of Iapetus; brother of Atlas and Epimetheus. 'Prometheus' is Greek for 'foresight'. Discovered by S. Collins and others in 1980 from Voyager photos. pandora & prometheus Prometheus is the inner shepherd satellite of the F ring. Prometheus has a number of ridges and valleys and several craters about 20 km in diameter but appears to be less cratered than the neighboring moons Pandora, Janus and Epimetheus. From their very low densities and relatively high albedos, it seems likely that Prometheus, Pandora, Janus and Epimetheus are very porous icy bodies. (Note, however, that there is a lot of uncertainty in these values.) The 1995/6 Saturn Ring Plane Crossing observations found that Prometheus was lagging by 20 degrees from where it should have been based on Voyager 1981 data. This is much more than can be explained by observational error. It is possible that Prometheus's orbit was changed by a recent encounter with the F ring, or it may have a small companion moon sharing its orbit.
More Discovered by S.A. Collins, D. Carlson (Voyager 1) in 1980
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