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Solar System Exploration
Juliet: Facts & Figures
   Back to Uranus   Overview   Gallery   Facts & Figures   News 
Discovered By
Voyager science team
Date of Discovery
3 January 1986
Orbit Size Around Uranus (semi-major axis)
Metric: 64,400 km
English: 40,016 miles
Periapsis (closest)
Metric: 64,355 km
Apoapsis (farthest)
Metric: 64,445 km
Sidereal Orbit Period (Length of Year)
0.00134976 Earth years
0.493 Earth days
Orbit Circumference
Metric: 404,637.08 km
Average Orbit Velocity
Metric: 34,198.5 km/h
Orbit Eccentricity
Orbit Inclination
Mean Radius
Metric: 46.8 ± 4 (assuming an albedo of 0.07) km
Equatorial Circumference
Metric: 294.1 km
Metric: 429,365 km3
Metric: 557,504,657,112,156,000 kg
Scientific Notation: 5.5750 x 1017 kg
Metric: 1.3 g/cm3
Surface Area
Metric: 27,523.37 km2
Surface Gravity
Metric: 0.017 m/s2
Escape Velocity
Metric: 144 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: 12 Aug 2013