value unc_up unc_lo author ref method 5.43 0.150 0.150 Masiero 2011ApJ...741...68M NEATM 6.95 1.970 1.970 Masiero 2020PSJ.....1....5M NEATM 9.24 2.730 2.730 Masiero 2012ApJ...759L...8M NEATM