value unc_up unc_lo author ref method 5.38 0.336 0.336 Masiero 2011ApJ...741...68M NEATM 6.98 2.260 2.260 Masiero 2020PSJ.....1....5M NEATM 7.08 2.010 2.010 Masiero 2020PSJ.....1....5M NEATM