The Outer Gas Giants 

Saturn






 

 
Saturn
Uranus
Neptune
Mass (Jupiter Masses)
0.30
0.045
0.053
Radius (Jupiter Radii)
0.85
0.36
0.35
Average Density (kg/m3)
690
1270
1640
Distance from Sun (AU)
9.5
19.2
30.1
Equilibrium Temperature (K)
80
60
45
Observed Temperature (K)
95
60
60

All visited by Voyager 2 probe in late 1980s;
Saturn also visited by Cassini/Huygens in 2004/5

Saturn: Uranus: Neptune: