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Solar System Exploration
Francisco: Facts & Figures
   Back to Uranus   Overview   Facts & Figures 
Discovered By
John J. Kavalaars, Matthew J. Holman, Dan Milisavljevic, and Tommy Grav.
Date of Discovery
13 August 2001
Orbit Size Around Uranus (semi-major axis)
Metric: 4,282,900 km
English: 2,661,271 miles
Periapsis (closest)
Metric: 3,715,844 km
Apoapsis (farthest)
Metric: 4,849,956 km
Sidereal Orbit Period (Length of Year)
0.731 Earth years
267.09 Earth days
By Comparison: Retrograde orbit
Orbit Circumference
Metric: 26,791,931.29 km
Average Orbit Velocity
Metric: 4,179.6 km/h
Orbit Eccentricity
Orbit Inclination
By Comparison: Retrograde orbit
Mean Radius
Metric: 11 (assuming an albedo of 0.04) km
Equatorial Circumference
Metric: 69.1 km
Metric: 5,575 km3
Metric: 8,392,543,225,344,280 kg
Scientific Notation: 8.3925 x 1015 kg
Metric: 1.5 g/cm3
Surface Area
Metric: 1,520.53 km2
Surface Gravity
Metric: 0.005 m/s2
Escape Velocity
Metric: 36 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