value unc_up unc_lo author ref method 8.84 0.080 0.080 Masiero 2014ApJ...791..121M NEATM 8.85 0.050 0.050 Masiero 2014ApJ...791..121M NEATM 8.92 0.116 0.116 Masiero 2011ApJ...741...68M NEATM 8.99 0.082 0.082 Masiero 2011ApJ...741...68M NEATM