value unc_up unc_lo author ref method 11.18 4.600 4.600 Masiero 2012ApJ...759L...8M NEATM 11.73 4.017 4.017 Masiero 2017AJ....154..168M NEATM 8.74 0.161 0.161 Masiero 2011ApJ...741...68M NEATM