value unc_up unc_lo author ref method 19.55 1.950 1.950 Ali-Lagoa 2018A&A...612A..85A NEATM 19.68 0.234 0.234 Masiero 2011ApJ...741...68M NEATM 20.19 0.410 0.410 Usui 2011PASJ...63.1117U NEATM 23.70 2.370 2.370 Ali-Lagoa 2018A&A...612A..85A NEATM