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Almanac > Moons

Io

Io is a satellite that orbits the planet Jupiter.
 

 



Io

 
 
Fact Sheet

Planet

  Jupiter

Date Discovered

  01/07/1610

Discoverer

  Galileo Galilei

Distance From Planet

  421,600 km

Mass

  8.94E+22 kg

Density

  3.57 g/cm³

Revolution Period

  1.77 days

Orbit Inclination

  0.04 degrees

Diameter

  3630 km

Eccentricity

  0.041

Albedo

  0.61

Escape Velocity

  2.025 km/s

 
Description

Overview:
Io is a moon that revolves around the planet Jupiter. This moon maintains a mean distance from Jupiter of 421,600 km. It takes this moon 1.77 days to orbit its planet.

Details:
Io is a relatively large moon with a diameter of 3630 km. Io has an eccentricity of 0.041 and an orbital inclination of 0.04 degrees.

Discovery:
This satellite was discovered by Galileo Galilei in 1610.