Just that it’s not really close to being a star with only 11 Jupiter masses. But it is close to being a brown dwarf, which is a sort of transitional category between planet and star.
I meant the actual fusion thing. What I am curious about is the timeframe.
I would assume the core being the highest pressure/temp is the starting point, but considering the sheer mass/size of a star, how fast does the entire ‘star’ become involved in the reaction? is it more a ‘slow burn’ or ‘blinding flash”?