Mass (kg): 1.90 x 1027
Diameter (km): 142,800
Mean density (kg/m3): 1314
Escape velocity (m/s): 59500
Average distance from Sun: 5.203 AU (778,412,020 km)
Rotation period (length of day in Earth days): 0.41 (9.8 Earth hours)
Revolution period (length of year in Earth years): 11.86
Obliquity (tilt of axis degrees) : 3.08
Orbit inclination (degrees): 1.3
Orbit eccentricity (deviation from circular): 0.048
Mean surface temperature (K): 120 (cloud tops)
Visual geometric albedo (reflectivity): 0.44
Atmospheric components: 90% hydrogen,10% helium, .07% methane
Rings: Faint ring, infrared spectra imply dark rock fragments.