We have used the Palomar 200" Adaptive Optics (AO) system to directly detect
the astrometric brown dwarf GJ 802B reported by Pravdo et al. 2005. This
observation is achieved with a novel combination of aperture masking
interferometry and AO. The dynamical masses are 0.175±0.021 Mââ and
0.064±0.032 Mââ for the primary and secondary respectively. The
inferred absolute H band magnitude of GJ 802B is MHâ=12.8 resulting in a
model-dependent Teffâ of 1850 ± 50K and mass range of
0.057--0.074 Mââ.Comment: 4 Pages, 5 figures, emulateapj format, submitted to ApJ