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Solar System Exploration
Margaret: Facts & Figures
   Back to Uranus   Overview   Facts & Figures 
Discovered By
Scott S. Sheppard and David C. Jewitt
Date of Discovery
29 August 2003
Orbit Size Around Uranus (semi-major axis)
Metric: 14,146,700 km
English: 8,790,352 miles
Periapsis (closest)
Metric: 4,566,555 km
Apoapsis (farthest)
Metric: 23,726,845 km
Sidereal Orbit Period (Length of Year)
4.547570157 Earth years
1661 Earth days
Orbit Circumference
Metric: 77,591,859.82 km
Average Orbit Velocity
Metric: 1,946.4 km/h
Orbit Eccentricity
Orbit Inclination
Mean Radius
Metric: 10.0 (assuming an albedo of 0.04) km
Equatorial Circumference
Metric: 62.8 km
Metric: 4,189 km3
Metric: 6,294,407,419,008,210 kg
Scientific Notation: 6.2944 x 1015 kg
Metric: 1.5 g/cm3
Surface Area
Metric: 1,256.64 km2
Surface Gravity
Metric: 0.004 m/s2
Escape Velocity
Metric: 33 km/h

Additional Information:

-USGS Astrogeology: Gazetteer of Planetary Nomenclature:

-JPL Solar System Dynamics:

-Encyclopedia of the Solar System, second edition; edited by Lucy-Ann McFadden, Paul R. Weissman, and Torrence V. Johnson; Academic Press 2007
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Last Updated: 7 Mar 2011