Saturn's Moons

Moon	Group	Radius (km)	Mass (kg)	Distance (Saturn radii)
Pan	small	9.655	?	2.23
Atlas	small	20x15	?	2.30
Prometheus	small	72.5x42.5x32.5	2.7 x 1017	2.32
Pandora	small	57x42x31	2.2 x 1017	2.37
Epimetheus	small	72x54x49	5.6 x 1017	2.52
Janus	small	98x96x75	2.01 x 1018	2.52
Mimas	medium-sized	196	3.80 x 1019	3.10
Enceladus	medium-sized	250	8.40 x 1019	3.97
Tethys	medium-sized	530	7.55 x 1020	4.92
Telesto	small	17x14x13	?	4.92
Calypso	small	17x11x11	?	4.92
Dione	medium-sized	560	1.05 x 1021	6.28
Helene	small	18x16x15	?	6.28
Rhea	medium-sized	765	2.49 x 1021	8.78
Titan	LARGE	2,575	1.35 x 1023	20.3
Hyperion	small	205x130x110	1.77 x 1019	24.7
Iapetus	medium-sized	730	1.88 x 1021	59.3
Phoebe	small	110	4.0 x 1018	217

References

Thomas, P., J. Veverka, D. Morrison, M. Davies. and T. V. Johnson. "Saturn's Small Satellites: Voyager Imaging Results." Journal of Geophysical Research, November 1, 1983, 8743-8754.

Soderblom, Laurence A. and Torrence V. Johnson. "The Moons of Saturn." Scientific American, January 1982.