value unc_up unc_lo author ref method 10.54 0.164 0.164 Masiero 2011ApJ...741...68M NEATM 10.66 0.119 0.119 Masiero 2011ApJ...741...68M NEATM 8.12 2.481 2.481 Masiero 2017AJ....154..168M NEATM