value unc_up unc_lo author ref method 6.17 1.460 1.460 Masiero 2020PSJ.....1....5M NEATM 8.16 0.071 0.071 Masiero 2011ApJ...741...68M NEATM 8.34 0.210 0.210 Masiero 2012ApJ...759L...8M NEATM