Astronomy Planets - Saturn Bulk Parameters | Orbital Parameters Observational Parameters | Atmospheric Parameters Satellites   Bulk Parameters Mass 468.46 × 1024 kg Volume 82 713 × 1010 km3 Equatorial Radius (Defined by Pressure = 1 bar) 60 268 km Polar Radius (Defined by Pressure = 1 bar) 54 364 km Volumetric Mean Radius 58 232 km Ellipticity 0.098 0 Mean Density 687 kg m-3 Surface Gravity 8.96 m s-2 Escape Velocity 35.5 km s-1 GM 37.931 × 106 km3 s-2 Bond Albedo 0.75 Visual Geometric Albedo 0.47 Visual Magnitude -8.88 Solar Irradiance 15.0 W m-2 Black-Body Temperature 83.9 K Moment of Inertia 0.210 I MR-2 Orbital Parameters Semimajor Axis 1 426.8 × 106 km Sidereal Orbit Period 10 759.22 days Tropical Orbit Period 10 746.94 days Perihelion 1 347.6 × 106 km Aphelion 1 506.4 × 106 km Synodic Period 378.09 days Mean Orbital Velocity 9.66 km s-1 Orbital Inclination 2.484 ° Orbital Eccentricity 0.054 15 Sidereal Rotation Period (System III Coordinates) 10.500 hours Obliquity to Orbit 26.73 ° Observational Parameters Maximum Apparent Diameter from Earth 20.1 arc seconds Minimum Apparent Diameter from Earth 14.5 arc seconds Maximum Distance from Earth 1 658.5 × 106 km Minimum Distance from Earth 1 195.5 × 106 km Apparent Magnitude near Opposition 0.7 Atmospheric Parameters Surface Pressure More than 100 bars Average Temperature 97 K Temperature at 1 bar 134 K Scale Height 59.6 km Wind Speeds (Under 30° lat.) Up to 400 m s-1 Wind Speeds (Over 30° lat.) Up to 150 m s-1 Mean Molecular Weight 2.07 g mol-1 Hydrogen H2 89% Helium He 11% Methane CH4 0.3% Ammonia NH3 0.02% Ethane C2H6 2 ppm Ammonia Ice Trace Water Ice Trace Ammonia Hydrosulphide Trace Satellites Major Satellites Mimas Enceladus Tethys Dione Rhea Titan Hyperion Iapetus Minor Satellites Pan Atlas Prometheus Pandora Epimetheus Janus Calypso Telesto Helene Phoebe S/2000 S1 S/2000 S2 S/2000 S3 S/2000 S4 S/2000 S5 S/2000 S6 S/2000 S7 S/2000 S8 S/2000 S9 S/2000 S10 S/2000 S11 S/2000 S12

Page compiled: Wed Sep 05 18:38:00 GMT+01:00 2001