| Discoverer: | Unknown |
| Spacecraft Encounters: |
Pioneer 11 (1979); Voyager 1 & 2 (1980, 1981) Cassini - Huygens (2004) |
| Mean Distance from the Sun: |
9.539 AU 1, 427,000,000 km / 911,400,000 mi |
| Length of Year: | 29.46 Earth years |
| Rotation Period: | 10.66 hours |
| Mean Orbital Velocity: | 9.64 km/s (6 mi/s) |
| Inclination of Axis: | 26.73 degrees |
| Diameter: | 120,536 km (74,901 mi) |
| Number of Observed Satellites: | 18 |
|
Comparisons With Earth: |
|
| Diameter: | 9.4 X Earth's |
| Average Distance from the Sun: | 9.5 X Earth's |
| Mass: | 95 X Earth's |
| Density: | 0.13 X Earth's |
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