value unc_up unc_lo author ref method 7.17 0.410 0.410 Masiero 2012ApJ...759L...8M NEATM 8.63 0.060 0.060 Masiero 2014ApJ...791..121M NEATM 8.73 0.044 0.044 Masiero 2011ApJ...741...68M NEATM