Moon
One of the most heavily cratered bodies in the solar system, largely unchanged for billions of years.
| Type | Moon |
|---|---|
| Orbits | Jupiter |
| Distance from parent body | 1,882,700 km |
| Diameter | 4,821 km |
| Mass | 1.08 × 10^23 kg |
| Surface gravity | 1.24 m/s² |
| Temperature | -139°C |
| Orbital period | 17 days |
| Apparent magnitude | 5.6 |
| Redshift | 0 |
| Discovered | 1610 |
At 4,821 km across, Callisto is 1.4 times the diameter of Earth's Moon.
Its mass is 1.8 percent of the mass of Earth.
It orbits Jupiter at 1,882,700 km, further out than the Moon orbits Earth.
A single orbit takes 16.7 days.
An average temperature of 134 K works out at -139 degrees Celsius, colder than the 15 degrees Earth averages.
It has been on record since 1610.
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