This IDL routine uses the 2MASS and WISE J, H, Ks, W1 and W2 apparent magnitudes and the distance of a given object, along with an estimated age range, to determine its most probable mass range using BT-Settl isochrones (Allard et al. 2013; Baraffe et al. 2003) in a likelihood analysis. Errors on the distance and photometry, when input, are propagated to the estimated mass range.
**IMPORTANT NOTE : Please read the header of banyan_mass.pro for installation instructions**
Please cite Gagné et al. 2014, Baraffe et al. 2003, Allard et al. 2013 and Rajpurohit et al. 2013 (see links below) if you use this procedure.