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The object was discovered in 2013 in images taken by the Pan-STARRS PS1 wide-field telescope. PSO J318.5-22's age is inferred to be 12 million years, the same age as the Beta Pictoris group. Based on its calculated temperature and age, it is classified under the brown dwarf spectral type L7.
Some say the same for Jupiter.
They are just failed stars.
A brown dwarf is nowhere near the mass of a star. But exo-planets have been found that are more than twice the mass of Jupiter.
Rogue, or free-floating, planets are isolated objects that have masses similar to that of planets.
Probably not. Has any such system been discovered?
Does a "Free-floating planetary sized sub-brown dwarf" (2MJ+) classify as a planet if it forms in a distinct protoplanetary disc