value unc_up unc_lo author ref method 16.86 1.590 1.590 Usui 2011PASJ...63.1117U NEATM 17.18 0.271 0.271 Masiero 2011ApJ...741...68M NEATM 17.33 3.470 3.470 Ali-Lagoa 2018A&A...612A..85A NEATM