The 2nd largest planet in the Solar System with its famous rings. It lies 10 times farther from the Sun than Earth is, and takes almost 30 earth-years to complete an orbit (Saturn's year). Saturn's diameter is about 9 times that of Earth. Like Jupiter & the Sun, Saturn is predominantly made up of light gases like hydrogen and helium and rotates quickly in about 10 hours (Saturn's day).
Nasa's site names 18 satellites over 20km in diameter for Saturn; Jupiter lists 16.
As you can see, though, there are millions of small ones. The rings are all rocks, dust and ice.