Positions of the radio and optical sources related to HD 199143. The red star indicates the position of the radio source in the first detected epoch by the VLBA observations. The Cyan dashed line indicates the optical trajectory of the primary component of the HD 199143 stellar system from 2016.0 to the epoch of detection of the radio source with the VLBA. The optical position of the star at the VLBA observed epoch is indicated with the cyan square. The blue square indicates the position of the secondary, HD 199143 B, whose absolute coordinates are unknown. Coordinates relative to the primary from the WDS catalog were used to estimate the absolute position. Gaia DR3 and VLBA position errors are smaller than the symbol sizes. The black line is the trajectory followed by the radio source detected with the VLA (Launhardt et al. 2022), assuming the derived astrometry at optical wavelengths from the VLA observed epoch to the VLBA observed epoch. The black square indicates the extrapolated position of the VLA radio source at the epoch of the VLBA detection. The black cross size indicates the VLA positional error.