value unc_up unc_lo author ref method 1.54 0.016 0.016 Mainzer 2011ApJ...743..156M NEATM 1.57 0.287 0.287 Mainzer 2012ApJ...760L..12M NEATM 1.60 0.630 0.630 Masiero 2020PSJ.....1....5M NEATM