Dione is the large moon in front of Saturn, Tethys and Mimas are below Saturn to the right, and Enceladus and Rhea are to the left. Titan, actually the largest moon by far, is in the background right. 18 known moons of Saturn. More may be discovered. These are thus balls of ice with a little bit of rock.
Orbits start just outside the rings.
Most of the moons are within a half million miles of Saturn. Then there's a gap and Titan, Hyperion, Iapetus, and Phoebe are all beyond 1 million miles. Phoebe revolves retrograde. Only moon with a substantial atmosphere. Surface temperature about 90K. May be liquid methane and ethane on the surface.