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Comparison Chart
Comparison: Siarnaq vs. Saturn

This chart shows the differences between Siarnaq and Saturn. To change the planets/moons being compared, change one or more of the form fields at the bottom and click Refresh.

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
Known by the Ancients
Date of Discovery
23 September 2000
Average Orbit Distance
18,015,400 km
1,426,666,422 km
Perihelion/Perigee (closest)
10,715,560 km
1,349,823,615 km
Aphelion/Apogee (farthest)
25,315,240 km
1,503,509,229 km
Equatorial Radius
20.0 (assuming an albedo of 0.06) km
58,232 km
Equatorial Circumference
125.7 km
365,882.4 km
33,510 km3
827,129,915,150,897 km3
38,965,379,260,527,000 kg
568,319,000,000,000,000,000,000,000 kg
2.3 g/cm3
0.687 g/cm3
Surface Area
5,026.55 km2
42,612,133,285 km2
Equatorial Surface Gravity
0.007 m/s2
10.4* m/s2
Escape Velocity
58 km/h
129,924 km/h
Orbit Period (Length of Year)
2.45431896 sidereal years
29.447498 sidereal years
Mean Orbit Velocity
5,038.2 km/h
34,701 km/h
Orbit Eccentricity
Orbit Inclination to Ecliptic
2.49 degrees
Orbit Circumference
108,394,044.13 km
8,957,504,604 km


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Last Updated: 3 Aug 2014