Fact Sheet
- Average distance from the Sun: 5.2 AU.
- Orbital Period: 11.86 years.
- Mass: 317.83 Earth masses.
- Radius: 142,984 km at the equator, 133,708 km a the Poles.
- Density: 1.33 g/cm3.
- Rotation period, measured from the magnetic field: 9 h 55 m.
- Chemical composition: 71% H2, 24% He, 5% other.
Jupiter's Four Largest Moons
- Io: average distance 422,000 km, orbital
period 1.769 days, radius 1,815 km, mass 1.2
Moon masses, density 3.6 g/cm3.
- Europa: average distance 671,000 km,
orbital period 3.551 days, radius 1,569 km,
mass 0.6 Moon masses, density 3.0 g/cm3.
- Ganimede: average distance 1,070,000 km,
orbital period 7.155 days, radius 2,631 km,
mass 2.0 Moon masses, density 1.9 g/cm3.
- Callisto: average distance 1,883,000 km,
orbital period 16.689 days, radius 2,400 km,
mass 1.47 Moon masses, density 1.9 g/cm3.
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