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Moon of Jupiter

Callisto

Mean radius2,410.3 km
Orbit (semi-major axis)1,882,700 km
Orbital period16.69 days

Galileo Galilei discovered Callisto and Jupiter's other three large moons in 1610.

Galileo spacecraft data from the 1990s suggest Callisto may hide a salty ocean beneath its surface.

Sources

  1. NASA Science, Callisto
  2. JPL Solar System Dynamics, Planetary Satellite Physical Parameters
  3. JPL Solar System Dynamics, Planetary Satellite Mean Elements
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