value unc_up unc_lo author ref method 5.06 0.518 0.518 Masiero 2011ApJ...741...68M NEATM 6.69 1.820 1.820 Masiero 2020PSJ.....1....5M NEATM 7.52 2.010 2.010 Masiero 2020PSJ.....1....5M NEATM