value unc_up unc_lo author ref method 14.65 0.490 0.490 Masiero 2012ApJ...759L...8M NEATM 17.87 0.320 0.320 Masiero 2014ApJ...791..121M NEATM 17.89 0.173 0.173 Masiero 2011ApJ...741...68M NEATM