Solar System Exploration: Planets: Uranus: Moons: Perdita: Facts & Figures

Solar System Exploration

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Facts & Figures

Perdita: Facts & Figures

Facts & Figures

Discovered By

Erich Karkoschka / Voyager 2

Date of Discovery

18 May 1999 (verified in Voyager 2 images dating back to January 18, 1986)

Orbit Size Around Uranus (semi-major axis)

Metric: 76,417 km

English: 47,483 miles

Periapsis (closest)

Metric: 75,531 km

Apoapsis (farthest)

Metric: 77,303 km

Sidereal Orbit Period (Length of Year)

0.638 Earth days

Orbit Circumference

Metric: 480,126.02 km

Average Orbit Velocity

Metric: 31,356.2 km/h

Orbit Eccentricity

0.0116

Orbit Inclination

0.47

Mean Radius

Metric: 15 ± 3 km

English: 9 ± 2 miles

Additional Information:

-USGS Astrogeology: Gazetteer of Planetary Nomenclature: http://planetarynames.wr.usgs.gov/append7.html

-JPL Solar System Dynamics: http://ssd.jpl.nasa.gov/

-Encyclopedia of the Solar System, second edition; edited by Lucy-Ann McFadden, Paul R. Weissman, and Torrence V. Johnson; Academic Press 2007 -Spaceflight Now, 31 December 2001, http://spaceflightnow.com/news/n0112/31uranusmoon/

NASA Official: Kristen Erickson

Advisory: Dr. James Green, Director of Planetary Science

Outreach Manager: Alice Wessen

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