value unc_up unc_lo author ref method 5.60 0.100 0.100 Masiero 2012ApJ...759L...8M NEATM 5.67 0.060 0.060 Masiero 2014ApJ...791..121M NEATM 5.99 0.083 0.083 Masiero 2011ApJ...741...68M NEATM