value unc_up unc_lo author ref method 6.31 0.083 0.083 Masiero 2011ApJ...741...68M NEATM 7.46 2.040 2.040 Masiero 2020PSJ.....1....5M NEATM 7.83 2.140 2.140 Masiero 2020PSJ.....1....5M NEATM