value unc_up unc_lo author ref method 10.66 0.430 0.430 Masiero 2012ApJ...759L...8M NEATM 9.44 0.131 0.131 Masiero 2011ApJ...741...68M NEATM 9.49 0.250 0.250 Masiero 2014ApJ...791..121M NEATM