Saturn's moons

 Name Distance to Saturn centre (km) Diameter (km) Orbit period (Earth days) Discovered by
Pan 133 583 20 0.58 Mark R. Showalter. Voyager 2, 1990
Atlas 137 670 27 x 37 0.60 R. Terrile. Voyager 1, 1980
Prometheus 139 353 68 x 148 0.61 S.A. Collins. D. Carlson. Voyager 1, 1980
Pandora 141 700 52 x 110 0.63 S. A. Collins. D. Carlson. Voyager 1, 1980
Epimetheus 151 422 110 x 138 0.69 R. Walker. J. Fountain. S. Larson, 1966/1978
Janus 151 472 154 x 194 0.69 Audouin Dollfus, 1966
Mimas 185 520 383 x 418 0.94 William Herschel, 1789
Enceladus 238 020 489 x 513 1.37 William Herschel, 1789
Tethys 294 660 1051 x 1071 1.89 G.D. Cassini, 1684
Telesto 294 660 15 x 30 1.89 B. Smith. H. Reitsema. S. Larson. J. Fountain, 1980
Calypso 294 660 16 x 30 1.89 D. Pascu. P.K. Seidelmann. W. Baum. D. Currie, 1980
Dione 377 400 1120 2.74 G.D. Cassini, 1684
Helene 377 400 30 x 36 2.74 P. Laques. J. Lecacheus, 1980
Rhea 527 040 1528 4.52 G.D. Cassini, 1672
Titan 1 221 830 5150 15.95 C. Huygens, 1655
Hyperion 1 481 100 225 x 360 21.28 W. & G. Bond. W. Lassell, 1848
Iapetus 3 561 300 1436 79.33 G.D. Cassini, 1671
Phoebe 12 952 000 220 550.48* W. Pickering, 1898

There are another 13 moons without official data. Their names are: Ymir, Paaliaq, Siarnaq, Tarvos, Kiviuq, Ijiraq, Thrym, Skadi/Skathi, Mundilfari, Erriapo, Albiorix, Suttung/Suttungr and S/2003 S1.

* indicates 'retrograde' orbit, i.e. the opposite way to the other moons.

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