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