value unc_up unc_lo author ref method 4.88 0.146 0.146 Masiero 2011ApJ...741...68M NEATM 5.06 0.135 0.135 Masiero 2011ApJ...741...68M NEATM 5.22 1.230 1.230 Nugent 2016AJ....152...63N NEATM