Saturn
Despite consisting mostly of hydrogen and helium, most of Saturn's mass is not in the gas phase, because hydrogen becomes a non-ideal liquid when the density is above 0.01 g/cm3, which is reached at a radius containing 99.9% of Saturn's mass.
Source: Wikipedia
rotation time
10.8 Hours
revolution time
29.46 Years
radius
58,232 KM
average temp.
-138°c