Krełowski, J.J.KrełowskiGalazutdinov, G. A.G. A.GalazutdinovStrobel, A.A.StrobelMULAS, GiacomoGiacomoMULAS2020-05-192020-05-1920160001-5237http://hdl.handle.net/20.500.12386/24969We estimated distances to several Orion Trapezium stars using our CaII-method and confirm the distance recommended by Menten et al. However, we found that in the case of HD 37020 both individual distances (based on the trigonometric VLBI parallax and/or CaII-method) differ from the spectrophotometric distance by a factor of 2.5. We interpret this fact as a result of presence of gray (neutral) extinction of about 1.8 mag in front of this star. The correctness of the applied spectral type/ luminosity class, Sp/L, (based on new original spectra from HARPS-N) and measurements of color indices is discussed. <P />STAMPAenArticlehttp://acta.astrouw.edu.pl/Vol66/n4/a_66_4_5.html2016AcA....66..469KFIS/05 - ASTRONOMIA E ASTROFISICA