Mass (kg): 1.02 x 1026
Diameter (km): 49528
Mean density (kg/m3) : 1640
Escape velocity (m/s): 23300
Average distance from 640-864 Sun: 30.07 AU (4,498,252,900 km)
Rotation period (length of day in Earth days) : 0.67 (19.1 hours)
Revolution period (length of year in Earth days): 60,190 (164.8 Earth years)
Obliquity (tilt of axis degrees) : 29.6
Orbit inclination (degrees) : 1.77
Orbit eccentricity (deviation from circular) : 0.009
Mean temperature (K): 48
Visual geometric albedo (reflectivity) : 0.51
Atmospheric components : 74% hydrogen, 25% helium 642-813 , 1% methane (at depth)
Rings : Rings are narrow, and contain concentrations of particles called ring arcs.