value unc_up unc_lo author ref method 5.63 0.370 0.370 Masiero 2012ApJ...759L...8M NEATM 6.15 0.640 0.640 Usui 2011PASJ...63.1117U NEATM 6.42 1.280 1.280 Ali-Lagoa 2018A&A...612A..85A NEATM 7.04 0.090 0.090 Masiero 2014ApJ...791..121M NEATM 7.22 0.037 0.037 Masiero 2011ApJ...741...68M NEATM