value unc_up unc_lo author ref method 6.54 0.190 0.190 Masiero 2011ApJ...741...68M NEATM 7.64 2.080 2.080 Masiero 2020PSJ.....1....5M NEATM 9.93 2.690 2.690 Masiero 2020PSJ.....1....5M NEATM