National Aeronautics and Space Administration Logo
Follow this link to skip to the main content NASA Banner
Solar System Exploration
Planets
Hyperion: Facts & Figures
   Back to Saturn   Overview   Gallery   Facts & Figures   News 
Discovered By
W. & G. Bond, W. Lassell
Date of Discovery
1848
Orbit Size Around Saturn (semi-major axis)
Metric: 1,500,934 km
English: 932,637 miles
Periapsis (closest)
Metric: 1,466,112 km
Apoapsis (farthest)
Metric: 1,535,756 km
Orbit Circumference
Metric: 9,429,377.34 km
Average Orbit Velocity
Metric: 18,462.9 km/h
Orbit Eccentricity
0.232
Orbit Inclination
0.615 degree
Mean Radius
Metric: 135.0 km
By Comparison: 205 x 130 x 110 km, tri-axial
Equatorial Circumference
Metric: 848.2 km
Volume
Metric: 10,305,995 km3
Mass
Metric: 5,585,537,250,153,240,000 kg
Scientific Notation: 5.5855 x 1018 kg
Density
Metric: 0.544 g/cm3
Surface Area
Metric: 229,022.10 km2
Surface Gravity
Metric: 0.020 m/s2
Escape Velocity
Metric: 268 km/h
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 Writer: Autumn Burdick
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
> USA.gov
> ExpectMore.gov
> NASA Advisory Council
> Open Government at NASA
Last Updated: 12 Aug 2013