value unc_up unc_lo author ref method 10.08 0.268 0.268 Masiero 2011ApJ...741...68M NEATM 12.93 2.420 2.420 Masiero 2012ApJ...759L...8M NEATM 13.58 1.400 1.400 Tedesco 2002AJ....123.1056T STM