Solar System: Saturn’s moons

Janus Mean Distance from Saturn 151,472 km (94,120 miles) Orbital Period around Saturn 0.6945 Earth days Mean Diameter 178 km (110.6 miles) Year Discovered 1966 Epimetheus Mean Distance from Saturn 151,422 km (94,089 miles) Orbital Period around Saturn 0.6942 Earth days Mean Diameter 115 km (71.5 miles) Year Discovered 1966 (rediscovered 1980) Helene Mean Distance from Saturn 377,400 km (234,505 miles) Orbital Period around Saturn 2.7369 Earth days Mean Diameter 33 km (20.5 miles) Year Discovered 1980 Telesto Mean Distance from Saturn 294,660 km (183,093 miles) Orbital Period around Saturn 1.8878 Earth days Mean Diameter 29 km (18.02 miles) Year Discovered 1980 Calypso Mean Distance from Saturn 294,660 km (183,093 miles) Orbital Period around Saturn 1.8878 Earth days Mean Diameter 26 km (16.2 miles) Year Discovered 1980 Atlas Mean Distance from Saturn 137,670 km (85,544 miles) Orbital Period around Saturn 0.6019 Earth days Mean Diameter 30 km (18.6 miles) Year Discovered 1980 Prometheus Mean Distance from Saturn 139,350 km (86,588 miles) Orbital Period around Saturn 0.6130 Earth days Mean Diameter 91 km (56.5 miles) Year Discovered 1980 Pandora Mean Distance from Saturn 141,700 km (88,048 miles) Orbital Period around Saturn 0.6285 Earth days Mean Diameter 84 km (52.2 miles) Year Discovered 1980 Pan Mean Distance from Saturn 133,583 km (83,005 miles) Orbital Period around Saturn 0.5750 Earth days Mean Diameter 20 km (12.4 miles) Year Discovered 1990 Original images located on various NASA websites including: http://photojournal.jpl.nasa.gov/index.html and http://nssdc.gsfc.nasa.gov/photo_gallery/