value unc_up unc_lo author ref method 18.85 3.770 3.770 Ali-Lagoa 2018A&A...612A..85A NEATM 19.91 0.143 0.143 Masiero 2011ApJ...741...68M NEATM 19.94 1.310 1.310 Usui 2011PASJ...63.1117U NEATM 21.93 4.390 4.390 Ali-Lagoa 2018A&A...612A..85A NEATM