value unc_up unc_lo author ref method 2.38 0.640 0.640 Masiero 2020PSJ.....1....5M NEATM 2.70 0.604 0.604 Masiero 2011ApJ...741...68M NEATM 3.25 0.514 0.514 Masiero 2011ApJ...741...68M NEATM