value unc_up unc_lo author ref method 10.14 0.160 0.160 Masiero 2012ApJ...759L...8M NEATM 9.39 2.494 2.494 Masiero 2017AJ....154..168M NEATM 9.51 0.105 0.105 Masiero 2011ApJ...741...68M NEATM