value unc_up unc_lo author ref method 4.58 0.165 0.165 Masiero 2011ApJ...741...68M NEATM 5.29 0.170 0.170 Masiero 2014ApJ...791..121M NEATM 5.44 0.034 0.034 Masiero 2011ApJ...741...68M NEATM