[Ditto]

If it's 4 times larger than Jupiter which makes it something like a tenth of the Sun's mass, and being so far distant, what keeps it in orbit around the Sun?

I'm not good enough to figure out the physics, but it seems that holding an orbit around the Sun for an object that large, and that far away is problematical.

Not that I'd understand them, but it would be interesting to see some Newtonian calculations on that.

[numberonepal]

Some believe the Sun may have a brown dwarf twin. Most stars of our type are part of a binary system.