Saturn Diameter.... 120,660 km Mass (Earth = 1).... 95.18 Distance in AU's from sun.... 9.54 Rotation period (length of day in Earth hours).... 10.2 Revolution period (length of year in Earth years).... 29.5 Mean surface temperature..... -185.0 (C) ... -301.0 (F) Number of moons.... 18 Light minutes from Sun.... 79.5 Light hours from Sun.... 1.3 Photo source: NASA'S Planetary PhotoJournal See credits for original photo information