National Aeronautics and Space Administration Logo
Follow this link to skip to the main content NASA Banner
Solar System Exploration
Callisto: Facts & Figures
   Back to Jupiter   Overview   Gallery   Facts & Figures   News 
Discovered By
Galileo Galilei
Date of Discovery
Orbit Size Around Jupiter (semi-major axis)
Metric: 1,882,700 km
English: 1,169,856 miles
Periapsis (closest)
Metric: 1,868,768 km
Apoapsis (farthest)
Metric: 1,896,632 km
Sidereal Orbit Period (Length of Year)
0.04569473 Earth years
16.6890184 Earth days
Orbit Circumference
Metric: 11,829,191.03 km
Average Orbit Velocity
Metric: 29,531.6 km/h
Orbit Eccentricity
Orbit Inclination
0.192 degree
Mean Radius
Metric: 2,410.3 km
Equatorial Circumference
Metric: 15,144.4 km
Metric: 58,654,577,603 km3
Metric: 107,593,737,963,819,000,000,000 kg
Scientific Notation: 1.0759 x 1023 kg
Metric: 1.834 g/cm3
Surface Area
Metric: 73,004,909.27 km2
Surface Gravity
Metric: 1.236 m/s2
Escape Velocity
Metric: 8,787 km/h
English: 5,460 mph
Scientific Notation: 2441 m/s
Rotation Period (Length of Day)
16.6890184 Earth days
By Comparison: Synchronous with orbital period
Atmospheric Constituents
Carbon dioxide
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: 12 Aug 2013