Saturn’s interior is most likely composed of a core of iron–nickel and rock (silicon and oxygen compounds). Its core is surrounded by a deep layer of metallic hydrogen, an intermediate layer of liquid hydrogen and liquid helium, and finally a gaseous outer layer.
It has 82 moons of which 53 are officially named; this does not include the hundreds of moonlets in its rings. Titan, Saturn’s largest moon, and the second-largest in the Solar System, is larger than the planet Mercury, although less massive, and is the only moon in the Solar System to have a substantial atmosphere.
With an average orbital speed of 9.68 km/s, it takes Saturn 10,759 Earth days (or about 29 1⁄2 years) to finish one revolution around the Sun. It takes 10.2 hours to rotate on its axis.
The temperature of Saturn’s upper atmosphere is on average about -175C (-285F), quite cold for a gas giant, while below the clouds it gets considerably hotter making its core to burn at around 11,700C