Mass (kg) | 1.29 x 10^{22} |
Diameter (km) | 2300 |
Mean density (kg/m^{3}) | 2030 |
Escape velocity (m/s) | 1100 |
Average distance from Sun | 39.48 AU (5,906,376,200 km) |
Rotation period (length of day in Earth days) | 6.39 (retrograde) |
Revolution period (length of year in Earth years) | 247.92 |
Obliquity (tilt of axis degrees) | 122.5 |
Orbit inclination (degrees) | 17.15 |
Orbit eccentricity (deviation from circular) | 0.248 |
Mean temperature (K) | 37 |
Visual geometric albedo (reflectivity) | about 0.5 |
Atmospheric components | perhaps methane and nitrogen |
Surface materials | perhaps methane ice |