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Name
- Callisto or Jupiter IV
Discovery date
- January 7, 1610[1]
Discoverer
- Galileo Galilei[1]
Orbiting
Characteristics
- Mass = 0.018 Earth mass[1]
- Radius = 0.378 Earth radius[1]
- Density = 1.834 g/cm3[1]
- Semi-major axis = 1,882,700 km[1]
- Eccentricity = 0.007[1]
- Orbital period = 16.7 Earth days[1]
- Rotation period = Synchronous rotation[1]
- Atmosphere = Carbon dioxide[1]
- Surface temperature = 80-165 K[1]
About the moon
- Galilean moons with the farther orbit from Jupiter.[1]
- Second largest moon of Jupiter.
- Made of rock and water ice.[1]
- Similar size of Mercury.[1]
- It is the most heavily cratered known object in our Solar System.
