Jupiter:
The King of the Solar System
King of the Solar System. Jupiter. This planet is the fifth in order from the sun. It has a diameter of 139,822 km or 86,885 miles, making it the largest planet. It has a mass that is 318 times that of Earth. The rotation of Jupiter is about 10 Earth hours. Its revolution is about 12 Earth years. Jupiter has 16 moons and 2 rings. This planet has an average temperature at cloud tops of -135 degrees Celsius (-243 degrees Fahrenheit). The major atmospheric gases are hydrogen, helium, and methane. It has an axial tilt of 3.08 degrees. If Jupiter had been 80 times more massive, it would have enough heat in its core to be a star.
