[petuniasevan]

10 times the size of Jupiter

Sloppy journalism here. What is meant? 10 times the MASS? 10 times the DIAMETER? I'm guessing mass; diameter wouldn't probably reach 10 times Jupiter's without increasing the mass past the "brown dwarf" threshold.

Excluding the Sun, Jupiter contains the majority of known mass in the Solar System. But it still is way too small (low-mass) to have initiated fusion in its core: it's only .001 solar masses! The estimates vary; I've heard that Jupiter would have to be around 80 times its current mass to "turn on" as a very small red dwarf. Anything 10-70 Jupiter masses would be a "brown dwarf", glowing in the visible spectrum from residual heat.

[X-FID]

Excluding the Sun, Jupiter contains the majority of known mass in the Solar System. But it still is way too small (low-mass) to have initiated fusion in its core: it's only .001 solar masses! The estimates vary; I've heard that Jupiter would have to be around 80 times its current mass to "turn on" as a very small red dwarf. Anything 10-70 Jupiter masses would be a "brown dwarf",

I have heard the same petuniasevan.