ChaHα8 (also written ChaHa8 when Greek letters are unavailable) is a brown dwarf 522 light years from Earth discovered in 2000. It was found in 2007 to have a low-mass substellar companion in orbit around it. The companion has a mass of 25–31 Jupiter masses and orbits with a period of 5.2 years and an eccentricity of 0.59.
^Joergens, V.; Müller, A.; Reffert, S. (2010). "Improved radial velocity orbit of the young binary brown dwarf candidate Cha Hα 8". Astronomy and Astrophysics521 (A24). doi:10.1051/0004-6361/201014853.