| Average distance from the Sun | 39.44 AU (59.00 x 108 km) |
| Eccentricity of orbit | 0.2484 |
| Maximum distance from the Sun | 49.24 AU (73.66 x 108 km) |
| Minimum distance from the Sun | 29.64 AU (44.34 x 108 km) |
| Inclination of orbit to ecliptic | 17º 9' 3'' |
| Average orbital velocity | 4.73 km/sec |
| Orbital period | 247.7 y (90,465 days) |
| Period of rotation | 6d 9h 21m |
| Inclination of equator to orbit | 122º |
| Equatorial diameter | 2370 km |
| Mass | 1.2 x 1022 kg |
| Average density | 2000 kg/m3 |
| Surface gravity | 0.06 earth gravity |
| Escape velocity | 1.2 km/sec |
| Surface temperature | 40 K (-382º F) |
| Atmospheric composition | Nitrogen and Methane (trace amounts) |
| Albedo | 0.5 |