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< back to Planets
The Planets: Planet Uranus
Uranus is the seventh of nine planets in our solar system and is one of the outer "gas giant" planets.
Although it's the third-largest planet in the solar system, it's so far from the Sun that you need binoculars to see it. Uranus is best viewed in summer and is in the constellation Aquarius.
| Uranus Facts |
| Mass (kg) |
8.686e+25 |
| Radius (km) |
25,559 |
| Density (gm/cm3) |
1.29 |
| Distance from Sun (km) |
2,870,990,000 |
| Period of rotation (hrs) |
-17.9 |
| Period of orbit (yrs) |
84.01 |
| Orbital velocity (km/sec) |
6.81 |
| Eccentricity of orbit |
0.0461 |
| Tilt of axis (°) |
97.86 |
| Inclination of orbit (°) |
0.774 |
| surface gravity (m/sec2) |
7.77 |
| escape velocity (km/sec) |
21.30 |
| Visual albedo |
0.51 |
| Visual magnitude |
5.52 |
| cloud temperature |
-193°C |
| Atmosphere |
Hydrogen=83%
Helium=15%
Methane=2%
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| Moons |
27 |
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Uranus is at the edge of naked-eye perception and can be seen with binoculars or any telescope.
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