5. Ganymede

5. Ganymede

Courtesy of NASA

http://solarsystem.nasa.gov/multimedia/display.cfm?IM_ID=9003


Moon of Jupiter

Diameter: 5,262 km
Orbit Radius: 1,070,410 km
Orbital Period: 7.0 days
Rotational Period: 7.0 days
Average Temperature: -163°C
Max/Min Temperature: -121°C/-203°C
Composition: Icy
Rings: No
Atmosphere: O; O2; O3
Atmospheric Pressure: Trace
Gravity (Earth=1): 0.146
Mass (Earth=1): 0.025
Magnetic Field: Unknown