value unc_up unc_lo author ref method 4.55 0.056 0.056 Masiero 2011ApJ...741...68M NEATM 6.63 1.800 1.800 Masiero 2020PSJ.....1....5M NEATM 8.11 3.990 3.990 Masiero 2012ApJ...759L...8M NEATM