value unc_up unc_lo author ref method 7.62 0.151 0.151 Masiero 2011ApJ...741...68M NEATM 7.68 0.250 0.250 Masiero 2012ApJ...759L...8M NEATM 8.29 1.660 1.660 Ali-Lagoa 2018A&A...612A..85A NEATM 8.47 0.540 0.540 Usui 2011PASJ...63.1117U NEATM