Saturn 

Spectacular Rings and Mysterious Moons 
OUTLINE 
Orbital period 
29.4 years 
Kepler's Law tells us that the period squared is proportional to the semimajor axis cubed.
 (117,000)^{3} = 1,600,000,000,000,000
A ratio of 4 in the cubes of the semimajor axes means a ratio of two in the periods.
 (186,000)^{3} = 6,400,000,000,000,000
Planet order from Sun 
6 
Golden Globe Awards for Saturn 

