> The planet, known as 2MASS J2126-8140, is between 12 and 15 times the mass of Jupiter.
Wouldn't object on the higher end of this range be regarded as a brown dwarf, making this system a binary star rather than a planet system?
Wouldn't object on the higher end of this range be regarded as a brown dwarf, making this system a binary star rather than a planet system?
Perhaps if it doesn't make it as a star, then it's not binary? It's not quite a planet system, but maybe one can call it a "Solar system"?
[1] https://en.wikipedia.org/wiki/Brown_dwarf
This might be interesting. In the same article, they call a pair of brown dwarves a "a binary system" rather than a binary star.