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Solar System Exploration
Ijiraq: 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: 11,367,400 km
English: 7,063,375 miles
Periapsis (closest)
Metric: 6,161,131 km
Apoapsis (farthest)
Metric: 16,573,669 km
Sidereal Orbit Period (Length of Year)
1.236194387 Earth years
451.52 Earth days
Orbit Circumference
Metric: 67,516,066.88 km
Average Orbit Velocity
Metric: 6,230.4 km/h
Orbit Eccentricity
Orbit Inclination
Mean Radius
Metric: 6.0 (assuming an albedo of 0.06) km
English: 3.7 miles
Equatorial Circumference
Metric: 37.7 km
Metric: 905 km3
Metric: 1,198,934,746,477,750 kg
Scientific Notation: 1.1989 x 1015 kg
Metric: 2.3 g/cm3
Surface Area
Metric: 452.39 km2
Surface Gravity
Metric: 0.002 m/s2
Escape Velocity
Metric: 19 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