value unc_up unc_lo author ref method 9.57 0.400 0.400 Masiero 2012ApJ...759L...8M NEATM 9.63 0.120 0.120 Masiero 2014ApJ...791..121M NEATM 9.79 0.084 0.084 Masiero 2011ApJ...741...68M NEATM