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Almanac > Moons

Umbriel
Umbriel is a moon which orbits the planet Uranus.
 

 



Umbriel
 
 
Fact Sheet

Planet

   Uranus

Date Discovered

   10/24/1851

Discoverer

   William Lassell

Distance From Planet

   266,000 km

Mass

   1.27E+21 kg

Density

   1.52 g/cm³

Revolution Period

   4.14 days

Orbit Inclination

   0.36 degrees

Diameter

   1169 km

Eccentricity

   0.005

Albedo

   0.18

 
Description

Overview:
Umbriel is a satellite that orbits the planet Uranus. Umbriel maintains a mean distance from Uranus of 266,000 km. It takes this moon 4.14 days to revolve around Uranus.

 Details:
Umbriel is a relatively large moon with a diameter of 1169 km. It has an eccentricity of 0.005 and an orbit inclindation of 0.36 degrees.

 Discovery:
Umbriel was discovered by William Lassell in 1851.