value unc_up unc_lo author ref method 7.23 0.251 0.251 Masiero 2011ApJ...741...68M NEATM 7.26 2.400 2.400 Masiero 2020PSJ.....1....5M NEATM 8.46 2.130 2.130 Masiero 2020PSJ.....1....5M NEATM