value unc_up unc_lo author ref method 5.42 0.060 0.060 Masiero 2014ApJ...791..121M NEATM 5.93 0.056 0.056 Masiero 2011ApJ...741...68M NEATM 6.01 0.054 0.054 Masiero 2011ApJ...741...68M NEATM 6.21 0.130 0.130 Masiero 2014ApJ...791..121M NEATM