Mass (kg) 5.69 x 10^26
Diameter (km) 120660
Mean density (kg/m^3) 690
Escape velocity (m/sec) 35600
Average distance from Sun (AU) 9.539
Rotation period (length of day in Earth hours) 10.2
Revolution period (length of year in Earth years) 29.46
Obliquity (tilt of axis in degrees) 26.7
Orbit inclination (degrees) 2.49
Orbit eccentricity (deviation from circular) 0.056
Mean temperature (K) 88 K (1 bar level)
Visual geometric albedo (reflectivity) 0.46
Atmospheric components: 97% hydrogen, 3% helium, .05% methane
Rings: Rings are 270,000 km in diameter, but only a few hundred meters thick. Particles are centimeters to decameters in size and are ice (some may be covered with ice); there are traces of silicate and carbon minerals. There are four main ring groups and three more faint, narrow ring groups separated by gaps called divisions.
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