The Science Shtick
 
Our Solar System: Callisto
Mass 1.08*1025 g
Average Density 1.86 g/cm³
Equatorial Radius 2.400*106 cm
Period of Rotation 16.68902 d
Orbital Radius 18.83*1010 cm
Orbital Period 16.68902 d
Discovered 1610 by Simon Marius & Galileo Galilei

Satellite of Jupiter