Vital Statistics for Saturn’s Regular Satellites

Regular Satellites of Saturn

Name Semimajor Axis (km) Period (days) Eccentricity Inclination (deg) Mean Diameter (km) Mass (kg) Associated Ring Footnotes Comments
Pan 133,584 0.575 0.00001 0.0001 28 4.95x1015 A ring, Encke gap 4,8,9  
Daphnis 136,504 0.594 0.00003 0.0036 7.6 7.70x1013 A ring, Keeler gap 3,10  
Atlas 137,666 0.602 0.0012 0.003 30.2 6.60x1015 A ring, Roche division 8,9  
Prometheus 139,378 0.613 0.0022 0.007 84.2 1.59x1017 F ring, Roche division 8,9 Prometheus and Pandora interact to produce chaotic orbit changes.
Pandora 141,713 0.629 0.0042 0.05 81.4 1.37x1017 F ring 8,9 Prometheus and Pandora interact to produce chaotic orbit changes.
Epimetheus 151,452 0.695 0.0097 0.352 116.2 5.27x1017 Janus/Epimetheus ring 8,9 Janus and Epimetheus are ‘coorbital’ and undergo orbit changes at approximately 4 year intervals. Semi-major axis and period given are averages.
Janus 151,452 0.695 0.0068 0.164 178 1.90x1018 Janus/Epimetheus ring 8,9 Janus and Epimetheus are ‘coorbital’ and undergo orbit changes at approximately 4 year intervals. Semi-major axis and period given are averages.
Aegaeon 167,494 0.808 0.00024 0.001     G ring 7 Embedded in the G Ring.
Mimas 185,537 0.942 0.0196 1.565 396 3.75x1019 B ring, Cassini division, Huygens gap 5,8  
Methone 194,230 1.01 0.01 0.01 2.8 3.92x1015 Methone ring 10  
Anthe 197,669 1.037 0.0010 0.159 2   Anthe ring 1,6  
Pallene 212,283 1.154 0.004 0.18 4.4 1.15x1016 Pallene ring 10  
Enceladus 238,037 1.37 0.0047 0.009 504 1.08x1020 E ring 5,8  
Tethys 294,672 1.888 0.0001 1.091 1066 6.17x1020   5,8  
Telesto 294,675 1.888 0.0002 1.2 25     10 Leading coorbital of Tethys.
Calypso 294,675 1.888 0.0005 1.5 20     10 Trailing coorbital of Tethys.
Dione 377,400 2.737 0.0022 0.028 1123 1.10x1021   5,8  
Helene 377,400 2.737 0.007 0.21 37     10 Leading coorbital of Dione.
Polydeuces 377,400 2.737 0.019 0.17 1.5     10 Trailing coorbital of Dione.
Rhea 527,070 4.518 0.001 0.36 1529 2.31x1021   5,8  
Titan 1,221,865 15.95 0.0288 0.312 5151 1.35x1023 Titan ringlet 5,8  
Hyperion 1,500,934 21.28 0.0232 0.615 266 5.58x1018   5,8  
Iapetus 3,560,851 79.33 0.0293 8.313 1471 1.81x1021   5,8  
Phoebe 12,948,000 548.02 0.1635 175.243 213 8.29x1018 Phoebe ring 5,11  

The table of Saturn’s rings can be found here.

Sources

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