Mean distance from Sun: 5.20 Astronomical Units
778,400,000 km
Diameter: 143,800 km
Mass: 317.89 Earths
Density: 1.3 grams per cubic centimeter
Surface temperature: -200 F
Orbital period: 11 years, 321 days
Rotational period: 9 hours, 56 minutes

Jupiter is the Solar System's largest planet - its composition is more like a star than a planet. Bright belts, changing cloud structures, four main moons (each larger than Earth's satellite) and the Great Red Spot are all easily visible in small telescopes.