Neptune

Mass (kg): 1.02 x 10²⁶
Diameter (km): 49528
Mean density (kg/m³): 1640
Escape velocity (m/s): 23300
Average distance from 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 (-225 ^oC)
Satellites: 13
Visual geometric albedo: (reflectivity) 0.51
Atmospheric components: 74% hydrogen (H), 25% helium (He), 1% methane (CH₄) (at depth)
Rings: Rings are narrow, and contain concentrations of particles called ring arcs.