value unc_up unc_lo author ref method 4.22 0.130 0.130 Masiero 2012ApJ...759L...8M NEATM 4.66 0.120 0.120 Masiero 2014ApJ...791..121M NEATM 5.15 0.085 0.085 Masiero 2011ApJ...741...68M NEATM