Discovered by S.Collins and others in 1980, from Voyager 1 photographs
Named after the first human woman created by the Gods (in Greek mythology)
Orbital size 141,700 km (about 88,000 miles) (just outside F ring)
Orbital eccentricity 0%
Orbital inclination 0 degrees
Orbital period 15.0 hours
Diameter about 110 x 90 x 60 km (about 68 x 55 x 39 miles) (quite irregular)
Mass, density and surface gravity uncertain
Albedo (reflectivity) 90%
Outer of two shepherd moons (inner is
Prometheus) which control Saturn's F ring