The article is very clear that this object is 9 light years away. A number of brown dwarfs have been found around that distance. Remember that the
closest regular star, one undergoing fusion, is 4.3 light years away.
The reason that it is Jupiter sized is that objects from 1 to 40 Jupiter masses range from the size of Jupiter to about 15% more in diameter. The
object is essentially denser as more mass is added.
The article never provides source info that I see. Is softpedia like wiki for journalists that can just post what they want? If so this is to be
ignored.
If true maybe disclosure is on its way. Just wishful thinking on my part.