value unc_up unc_lo author ref method 11.47 0.120 0.120 Masiero 2014ApJ...791..121M NEATM 11.98 0.107 0.107 Masiero 2011ApJ...741...68M NEATM 12.80 0.230 0.230 Masiero 2012ApJ...759L...8M NEATM