value unc_up unc_lo author ref method 4.59 1.286 1.286 Masiero 2017AJ....154..168M NEATM 5.50 0.525 0.525 Masiero 2011ApJ...741...68M NEATM 5.90 1.876 1.876 Masiero 2011ApJ...741...68M NEATM