- Distance from Earth now
- 8.434 AU (1.26 billion km)
- Distance from the Sun now
- 9.434 AU (1.41 billion km)
- Light time from Earth
- 1 h 10 min
- Mean radius
- 58,232 km (9.140 × Earth)
- Mass
- 5.683 × 10^26 kg
- Surface gravity
- 11.19 m/s² (1.14 g)
- Escape velocity
- 36.1 km/s
- Rotation period
- 10.7 hours
- Year (orbit around the Sun)
- 29.46 years (10,759 days)
- Average distance (semi-major axis)
- 9.537 AU (1.43 billion km)
- Orbital eccentricity
- 0.0552
- Inclination to the ecliptic
- 2.49°
- Next closest approach to Earth
- 18 October 2027 — 8.326 AU (1.25 billion km)
Positions from NASA JPL Horizons; physical constants from the IAU and JPL. Distances are centre to centre.