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| Orbital semi-major axis | 5.20 A.U. 778.4 million km |
| Orbital eccentricity | 0.048 |
| Perihelion | 4.95 A.U. 740.7 million km |
| Aphelion | 5.46 A.U. 816.1 million km |
| Mean orbital speed | 13.1 km/s |
| Sidereal orbital period | 11.86 tropical years |
| Synodic orbital period | 398.88 solar days |
| Orbital inclination to the ecliptic | 1.31° |
| Greatest angular diameter, as seen from Earth | 50" |
| Mass | 1.90 317.8 (Earth = 1) |
| Equatorial radius | 71,492 km 11.21 (Earth = 1) |
| Mean density | 1330 kg/m3 0.241 (Earth = 1) |
| Surface gravity | 24.8 m/s2 2.53 (Earth = 1) |
| Escape speed | 59.5 km/s |
| Sidereal rotation period | 0.41 solar days |
| Axial tilt | 3.08° |
| Surface magnetic field | 13.89 (Earth = 1) |
| Magnetic axis tilt relative to rotation axis | 9.6° |
| Surface temperature | 124 K (at cloudtops) |
| Number of moons | 16 |