value unc_up unc_lo author ref method 7.22 0.140 0.140 Masiero 2014ApJ...791..121M NEATM 7.48 0.130 0.130 Masiero 2014ApJ...791..121M NEATM 7.73 0.040 0.040 Masiero 2011ApJ...741...68M NEATM 7.95 0.037 0.037 Masiero 2011ApJ...741...68M NEATM