DENIS J081730.0−615520 is a T-type brown dwarf 17 light-years away in the constellation Carina. It was discovered by Etienne Artigau and his colleagues in April 2010. The brown dwarf belongs to the T6 spectral class, with a photosphere temperature of about 1000 K. It has a mass of about 15 MJ or about 1.5% the mass of the Sun.