Uranus
The sideways-tilted ice giant.
Uranus is the seventh planet from the Sun, a cyan ice giant made mostly of water, ammonia and methane. Its atmosphere has the lowest minimum temperature of any planet, 49 K.
It is tilted by about 82 degrees, so during its 84-year orbit each pole has about 42 years of continuous sunlight followed by 42 years of darkness. Like the other giant planets it has rings, a magnetosphere and many moons.
Quick Facts
- Synodic period
- 369.66 days
- Average speed
- 6.80 km/s
- Satellites
- 29
- Flattening
- 0.0229, 0.0008
- Surface gravity
- 8.69 m/s2
- Moment of inertia factor
- 0.23 (estimate)
- Escape velocity
- 21.3 km/s
- Axial tilt
- 82.23° (to orbit, retrograde).; 97.77°(prograde, right-hand rule)
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