3rd of the 4 gas giants. Uranus has a rocky core wrapped in a mantle of
gases and ice. Surrounding the mantle is an atmosphere containing methane, which gives
Uranus it's distinctive blue-green color. Cloud tops have a temperature of -210 C (-346
F). Uranus has 15 moons and a ring system. Uranus has almost no visable features. Only 1
feature has been observed by the space probe Voyager 2 in 1986, and that was a few methane
clouds.
- Average distance from the Sun: 2.87 billion km (1.78 billion miles)
- Diameter at equator: 51,118 km (31,763 miles)
- Rotation Period: 17.90 hours
- Orbital Period: 84.01 Earth years
- Orbital Velocity: 6.81 km/s (4.23 mps)
- Cloud Top Temperature: -210 C (-350 F)
- Mass: (earth=1) 14.53
- Average Density: (water=1) 1.29
- Surface Gravity: (earth=1) 0.79
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