value unc_up unc_lo author ref method 8.21 0.082 0.082 Masiero 2011ApJ...741...68M NEATM 9.20 2.600 2.600 Masiero 2021PSJ.....2..162M NEATM 9.93 1.690 1.690 Masiero 2012ApJ...759L...8M NEATM