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Solar System Exploration
Tarvos: Facts & Figures
   Back to Saturn   Overview   Facts & Figures   News 
Discovered By
Brett J. Gladman, John J. Kavelaars, Jean-Marc Petit, Hans Scholl, Matthew J. Holman, Brian G. Marsden, Phillip D. Nicholson, and Joseph A. Burns
Date of Discovery
23 September 2000
Orbit Size Around Saturn (semi-major axis)
Metric: 18,263,200 km
English: 11,348,226 miles
Periapsis (closest)
Metric: 8,567,267 km
Apoapsis (farthest)
Metric: 27,959,133 km
Sidereal Orbit Period (Length of Year)
2.534839151 Earth years
925.85 Earth days
Orbit Circumference
Metric: 106,178,340.27 km
Average Orbit Velocity
Metric: 4,778.4 km/h
Orbit Eccentricity
Orbit Inclination
Mean Radius
Metric: 7.5 (assuming an albedo of 0.06) km
English: 4.7 miles
Equatorial Circumference
Metric: 47.1 km
Metric: 1,767 km3
Metric: 2,697,603,179,574,950 kg
Scientific Notation: 2.6976 x 1015 kg
Metric: 2.3 g/cm3
Surface Area
Metric: 706.86 km2
Surface Gravity
Metric: 0.003 m/s2
Escape Velocity
Metric: 25 km/h

Additional Information:

-USGS Astrogeology: Gazetteer of Planetary Nomenclature:

-JPL Solar System Dynamics:

-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:

-"A deeper look at the colors of the Saturnian irregular satellites" by Tommy Grav and James Bauer:
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Last Updated: 11 Apr 2011