Gagné et al. (2015) present the discovery of SDSS J111010.01+011613.1 (hereafter SDSS J1110+0116), a young, planetary-mass T dwarf. Measurements indicate that SDSS J1110+0116 is located at a distance of roughly 60 light years and it is a member of the AB Doradus moving group - a group of objects that formed in the same natal cluster and have since dispersed. J1110+0116 is estimated to have roughly 10 to 12 times the mass and 1.18 ± 0.02 times the radius of Jupiter. The mass of J1110+0116 is well in the planetary-mass regime. J1110+0116 is a young object with an estimated age of only 110 to 130 million years old. It is still glowing hot from the heat acquired during its formation and its effective temperature is estimated to be 940 ± 20 K.
Gagné et al. (2015), "SDSS J111010.01+011613.1: A New Planetary-Mass T Dwarf Member of the AB Doradus Moving Group", arXiv:1506.04195 [astro-ph.SR