value unc_up unc_lo author ref method 2.87 0.085 0.085 Masiero 2011ApJ...741...68M NEATM 4.59 1.040 1.040 Masiero 2021PSJ.....2..162M NEATM 4.84 1.540 1.540 Masiero 2012ApJ...759L...8M NEATM