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Solar System Exploration
Planets
S/2003 J9: Facts & Figures
   Back to Jupiter   Overview   Facts & Figures 
Discovered By
Scott Sander Sheppard
Date of Discovery
February 2003
Orbit Size Around Jupiter (semi-major axis)
Metric: 23,385,000 km
English: 14,530,765 miles
Periapsis (closest)
Metric: 17,209,022 km
Apoapsis (farthest)
Metric: 29,560,979 km
Sidereal Orbit Period (Length of Year)
2.007693361 Earth years
733.31 Earth days
By Comparison: Retrograde orbit
Orbit Circumference
Metric: 144,335,680.97 km
Average Orbit Velocity
Metric: 8,201.2 km/h
Orbit Eccentricity
0.2641
Orbit Inclination
165.155
By Comparison: Retrograde orbit
Mean Radius
Metric: 0.5 (assuming an albedo of 0.04) km
English: 0.3 miles
Equatorial Circumference
Metric: 3.1 km
Volume
Metric: 1 km3
Mass
Metric: 1,498,668,433,097 kg
Scientific Notation: 1.4987 x 1012 kg
Density
Metric: 2.6 g/cm3
Surface Area
Metric: 3.14 km2
Surface Gravity
Metric: 0.0004 m/s2
Escape Velocity
Metric: 2 km/h

Additional Information:

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

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

-Solar System Moons: Discovery and Mythology by Jürgen Blunck; Springer-Verlag Berlin Heidelberg 2010

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

-Ellis Miner

-Encyclopædia Britannica Online. 2010: http://www.britannica.com
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Last Updated: 9 Mar 2011