value unc_up unc_lo author ref method 10.34 0.139 0.139 Masiero 2011ApJ...741...68M NEATM 9.70 0.410 0.410 Masiero 2012ApJ...759L...8M NEATM 9.81 0.140 0.140 Masiero 2014ApJ...791..121M NEATM