value unc_up unc_lo author ref method 6.04 0.178 0.178 Masiero 2011ApJ...741...68M NEATM 7.67 2.060 2.060 Masiero 2020PSJ.....1....5M NEATM 8.65 2.660 2.660 Masiero 2020PSJ.....1....5M NEATM