value unc_up unc_lo author ref method 2.19 0.497 0.497 Masiero 2011ApJ...741...68M NEATM 2.20 0.700 0.700 Masiero 2020PSJ.....1....5M NEATM 2.50 0.370 0.370 Masiero 2011ApJ...741...68M NEATM