National Aeronautics and Space Administration Logo
Follow this link to skip to the main content NASA Banner
Solar System Exploration
Saturn: Facts & Figures
   Overview   Read More   Moons   Rings   Gallery 
   Facts & Figures   Education   Events   Missions   News   FAQ 
Discovered By
Known by the Ancients
Date of Discovery
Orbit Size Around Sun (semi-major axis)
Metric: 1,426,666,422 km
English: 886,489,415 miles
Scientific Notation: 1.4266664 x 109 km (9.53667594 A.U.)
By Comparison: 9.537 x Earth
Perihelion (closest)
Metric: 1,349,823,615 km
English: 838,741,509 miles
Scientific Notation: 1.34982 x 109 km (9.023 A.U.)
By Comparison: 9.176 x Earth
Aphelion (farthest)
Metric: 1,503,509,229 km
English: 934,237,322 miles
Scientific Notation: 1.50351 x 109 km (1.005 x 101 A.U.)
By Comparison: 9.885 x Earth
Sidereal Orbit Period (Length of Year)
29.447498 Earth years
10,755.70 Earth days
By Comparison: 29.447 x Earth
Orbit Circumference
Metric: 8,957,504,604 km
English: 5,565,935,315 miles
Scientific Notation: 8.958 x 109 km
By Comparison: 9.530 x Earth
Average Orbit Velocity
Metric: 34,701 km/h
English: 21,562 mph
Scientific Notation: 9.6391 x 103 m/s
By Comparison: 0.324 x Earth
Orbit Eccentricity
By Comparison: 3.223 x Earth
Orbit Inclination
2.49 degrees
Equatorial Inclination to Orbit
26.7 degrees
Mean Radius
Metric: 58,232 km
English: 36,183.7 miles
Scientific Notation: 5.8232 x 104 km
By Comparison: 9.1402 x Earth
Equatorial Circumference
Metric: 365,882.4 km
English: 227,348.8 miles
Scientific Notation: 3.65882 x 105 km
By Comparison: 9.1402 x Earth
Metric: 827,129,915,150,897 km3
English: 198,439,019,647,006 mi3
Scientific Notation: 8.2713 x 1014 km3
By Comparison: 763.594 x Earth
Metric: 568,319,000,000,000,000,000,000,000 kg
Scientific Notation: 5.6832 x 1026 kg
By Comparison: 95.161 x Earth
Metric: 0.687 g/cm3
By Comparison: 0.125 x Earth
Surface Area
Metric: 42,612,133,285 km2
English: 16,452,636,641 square miles
Scientific Notation: 4.2612 x 1010 km2
By Comparison: 83.543 x Earth
Surface Gravity
Metric: 10.4* m/s2
English: 34.3 ft/s2
By Comparison: If you weigh 100 pounds on Earth, you would weigh about 107 pounds on Saturn (at the equator). *Derived from a 1 bar radius of 60,268 km.
Escape Velocity
Metric: 129,924 km/h
English: 80,731 mph
Scientific Notation: 3.609 x 104 m/s
By Comparison: Escape velocity of Earth is 25,030 mph.
Sidereal Rotation Period (Length of Day)
0.444 Earth days
10.656 hours
By Comparison: 0.445 x Earth
Effective Temperature
Metric: -178 °C
English: -288 °F
Scientific Notation: 95 K
Atmospheric Constituents
Hydrogen, Helium
Scientific Notation: H2, He
By Comparison: Earth's atmosphere consists mostly of N2 and O2.

Additional Information:

Namesake: Roman god of agriculture.

Awards and Recognition   Solar System Exploration Roadmap   Contact Us   Site Map   Print This Page
NASA Official: Kristen Erickson
Advisory: Dr. James Green, Director of Planetary Science
Outreach Manager: Alice Wessen
Curator/Editor: Phil Davis
Science Writers: Courtney O'Connor and Bill Dunford
Producer: Greg Baerg
Webmaster: David Martin
> NASA Science Mission Directorate
> Budgets, Strategic Plans and Accountability Reports
> Equal Employment Opportunity Data
   Posted Pursuant to the No Fear Act
> Information-Dissemination Policies and Inventories
> Freedom of Information Act
> Privacy Policy & Important Notices
> Inspector General Hotline
> Office of the Inspector General
> NASA Communications Policy
> NASA Advisory Council
> Open Government at NASA
Last Updated: 3 Aug 2014