2MASS J04151954−0935066 (also abbreviated to 2MASS 0415−0935) is a brown dwarf of spectral class T8,[2][4] in the constellation Eridanus about 18.6 light-years from Earth.

[5] 2MASS 0415−0935 was discovered in 2002 by Adam J. Burgasser et al. from Two Micron All-Sky Survey (2MASS), conducted from 1997 to 2001.

Naval Observatory Infrared Astrometry Program, was published in 2004 by Vrba et al.[7] Position of 2MASS 0415−0935 shifts due to its proper motion by 2.2553 arcseconds per year (2.2782 ± 0.0012 arcsec, according to Dupuy & Liu (2012)[2]).

[5] The Research Consortium On Nearby Stars (RECONS) estimates the brown dwarf to be 0.03 solar masses.

2MASS 0415-0935 joins a number of T and Y-dwarfs with missing phosphine, such as WISE 0359−5401, requiring a major revision of phosphorus chemistry in brown dwarfs and possibly giant planets.