value unc_up unc_lo author ref method 9.27 0.940 0.940 Masiero 2012ApJ...759L...8M NEATM 9.52 0.110 0.110 Masiero 2014ApJ...791..121M NEATM 9.56 0.118 0.118 Masiero 2011ApJ...741...68M NEATM