value unc_up unc_lo author ref method 9.55 0.150 0.150 Masiero 2014ApJ...791..121M NEATM 9.75 0.300 0.300 Masiero 2012ApJ...759L...8M NEATM 9.81 0.063 0.063 Masiero 2011ApJ...741...68M NEATM