Jupiter
When the Juno arrived in 2016, it found that Jupiter has a very diffuse core that mixes into its mantle. A possible cause is an impact from a planet of about ten Earth masses a few million years after Jupiter's formation, which would have disrupted an originally solid Jovian core.
Source: Wikipedia 
Rotation Time
9.93 Hours
Revolution Time
11.86 Years
Radius
69,911 KM
Average Temp.
-108°c