The Moons of Saturn


rsatsatst.jpg (8953 bytes) Like Jupiter, Saturn has several icy moons and small asteroid-like objects in orbit around the planet. Their sizes range from 5150 kilometers (3200 miles) down to 20 kilometers (12 miles) in diameter, although smaller satellites are likely to exist.

Both the orbital dynamics of these moons and their distinctly different compositions make the Saturnian satellites a small-scale analog of our solar system.

Six of Saturn's moons are shown in the image at left.   Dione is in foreground, Tethys and Mimas to the right of Saturn, Enceladus and Rhea off Saturn's rings to the left, and Titan at top right.

18K JPEG
Montage of Saturnian System constructed from Voyager 1 imagery.
NASA Press Release #P23209
Credit: NASA Planetary Photojournal

 

Saturn's Moons
Click on the satellite name for more information.

 

Name
Discoverer
   Diameter	
Distance from 

Saturn
Orbital Period

(days)
Pan Showalter, 1990 20 km/12 mi 134,000 km/83,260 mi .58
Atlas Terrile, 1980 30 km/19 mi 137,640 km/85,500 mi .60
Prometheus Collins, 1980 100 km/62 mi 139,350 km/86,600 mi .61
Pandora Collins, 1980 90 km/56 mi 141,700 km/88,000 mi .63
Epimetheus Walker, 1966 120 km/75 mi 151,420 km/94,090 mi .69
Janus Dolfus, 1966 190 km/118 mi 151,470 km/94,120 mi .70
Mimas Herschel, 1789 390 km/242 mi 185,520 km/115,280 mi .94
Enceladus Herschel, 1789 500 km/311 mi 238,020 km/147,900 mi 1.37
Tethys Cassini, 1684 1,060 km/659 mi 294,660 km/183,000 mi 1.89
Telesto Smith, 1980 25 km/16 mi 294,660 km/183,000 mi 1.89
Calypso Smith, 1980 25 km/16 mi 294,660 km/183,000 mi 1.89
Dione Cassini, 1684 1,120 km/696 mi 377,400 km/234,500 mi 2.74
Helene Laques/Lecacheux,1980   30 km/19 mi 377,400 km/234,500 mi 2.74
Rhea Cassini, 1672 1,530 km/951 mi 527,040 km/327,500 mi 4.52
Titan Huygens, 1655 5,150 km/3,200 mi 1,221,850 km/759,200 mi 15.95
Hyperion Bond, 1971 255 km/159 mi 1,481,000 km/920,300 mi 21.28
Iapetus Cassini, 1671 1,460 km/907 mi 3,561,300 km/2,212,900 mi 79.33
Phoebe Pickering, 1898 220 km/137 mi 12,952,000 km/8,048,000 mi 550.48
S/2000 S1
2000** 10-50 km/6-30 mi    >15,000,000 km/9,000,000 mi   
?
S/2000 S2
2000** 10-50 km/6-30 mi >15,000,000 km/9,000,000 mi
?
S/2000 S3
2000** 10-50 km/6-30 mi >15,000,000 km/9,000,000 mi
?
S/2000 S4 2000** 10-50 km/6-30 mi >15,000,000 km/9,000,000 mi
?
As many as 8 more satellites of Saturn have been found and scientists continue to search for more.

** International Team: Burns, Gladman, Holman, Kavelaars, Marsden, Nicholson, Petit, Scholl


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