value unc_up unc_lo author ref method 11.68 0.160 0.160 Masiero 2014ApJ...791..121M NEATM 12.18 0.147 0.147 Masiero 2011ApJ...741...68M NEATM 16.39 1.500 1.500 Tedesco 2002AJ....123.1056T STM