value unc_up unc_lo author ref method 6.98 0.140 0.140 Masiero 2014ApJ...791..121M NEATM 7.51 0.149 0.149 Masiero 2011ApJ...741...68M NEATM 8.26 0.640 0.640 Usui 2011PASJ...63.1117U NEATM 8.70 1.740 1.740 Ali-Lagoa 2018A&A...612A..85A NEATM