Io (Satellite of Jupiter)

Full size image of Io (80 KB.)

Constants

•  Mean Radius:               1821.46 km

•  Mass:                      0.0149 (Earth=1)

•  Density:                   3.55 (g/cm^3)

•  Gravity:                   0.183 (Earth=1)

•  Orbit Period:              1.769 (Earth days)

•  Rotation Period:           1.769 (Earth days)

•  Semimajor Axis of Orbit:   422,600 km

•  Eccentricity of Orbit:     0.004

Io Nomenclature

Official names of features on Io as approved by the International Astronomical Union.

Jupiter Satellites Voyager and Galileo Global Mosaics

Global image maps of Io and other Jovian satellites created from Voyager and Galileo imagery.