Once the age of the system was known, it was possible to estimate the mass of 2MASS J2126-8140 as between 11.6 and 15 times that of Jupiter, which places the object firmly astride the 13 Jupiter-mass so-called “deuterium-burning” dividing line that separates planets and brown dwarfs.
2MASS J21265040−8140293, also known as 2MASS J2126−8140, is an Exoplanet orbiting the red dwarf TYC 9486-927-1. It has the record for the longest and widest orbit, with it’s year being about 900,000 years and it’s semi-Major axis being 6,900 AU.
(from wikipedia)
2MASS J21265040−8140293, also known as 2MASS J2126−8140, is an exoplanet orbiting the red dwarf TYC 9486-927-1, 111.4±0.3 light-years away from Earth. Its estimated mass, age, spectral type, and Teff are similar to the well-studied planet β Pictoris b. With an estimated distance of around 1 trillion kilometres from its host star, it is one of the largest solar systems ever found.