value unc_up unc_lo author ref method 4.08 0.670 0.670 Masiero 2012ApJ...759L...8M NEATM 4.27 0.107 0.107 Masiero 2011ApJ...741...68M NEATM 5.10 1.290 1.290 Masiero 2020PSJ.....1....5M NEATM