Uranus Statistics |
Discovered by |
William Herschel |
Date of discovery |
1781 |
Mass (kg) |
8.686e+25 |
Mass (Earth = 1) |
1.4535e+01 |
Equatorial radius (km) |
25,559 |
Equatorial radius (Earth = 1) |
4.0074 |
Mean density (gm/cm^3) |
1.29 |
Mean distance from the Sun (km) |
2,870,990,000 |
Mean distance from the Sun (Earth = 1) |
19.1914 |
Rotational period (hours) |
-17.9 |
Orbital period (years) |
84.01 |
Mean orbital velocity (km/sec) |
6.81 |
Orbital eccentricity |
0.0461 |
Tilt of axis (degrees) |
97.86 |
Orbital inclination (degrees) |
0.774 |
Equatorial surface gravity (m/sec^2) |
7.77 |
Equatorial escape velocity (km/sec) |
21.30 |
Visual geometric albedo |
0.51 |
Magnitude (Vo) |
5.52 |
Mean cloud temperature |
-193°C |
Atmospheric pressure (bars) |
1.2 |
Atmospheric composition
Hydrogen Helium Methane |
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