value unc_up unc_lo author ref method 5.36 0.060 0.060 Masiero 2014ApJ...791..121M NEATM 5.66 0.210 0.210 Masiero 2012ApJ...759L...8M NEATM 5.70 0.069 0.069 Masiero 2011ApJ...741...68M NEATM