PLANETARY DATA: URANUS |
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Orbital semi-major axis | 19.19 A.U. 2871 million km |
Orbital eccentricity | 0.047 |
Perihelion | 18.29 A.U. 2736 million km |
Aphelion | 20.10 A.U. 3006 million km |
Mean orbital speed | 6.80 km/s |
Sidereal orbital period | 83.75 tropical years |
Synodic orbital period | 369 .66 solar days |
Orbital inclination to the ecliptic | 0.77° |
Greatest angular diameter, as seen from Earth | 4.1" |
Mass | 8.68 1025 kg 14.54 (Earth = 1) |
Equatorial radius | 25,559 km 4.01 (Earth = 1) |
Mean density | 1271 kg/m3 0.230 (Earth = 1) |
Surface gravity* | 8.87 m/s2 0.91 (Earth = 1) |
Escape speed | 21.3 km/s |
Sidereal rotation period | 0.72 solar days (retrograde) |
Axial tilt** | 97.92° |
Surface magnetic field | 0.74 (Earth = 1) |
Magnetic axis tilt relative to rotation axis | 58.6° |
Mean surface temperature | 58 K |
Number of moons | 17 |