value unc_up unc_lo author ref method 3.96 0.785 0.785 Masiero 2011ApJ...741...68M NEATM 4.78 0.278 0.278 Masiero 2011ApJ...741...68M NEATM 5.00 0.410 0.410 Masiero 2012ApJ...759L...8M NEATM