Results of The Joker and the joint fitting of RV and astrometry. Panel (a): Keplerian orbital fit from The Joker. Panel (b): RV residuals. Panel (c): astrometric orbits of the primary star (black), photocenter (red), and Gaia-only solution (green) in the sky-projected plane. The black dashed line inside the orbit is the line of nodes joining the ascending node and the descending node. The plus symbol denotes the system’s barycenter, and the gray line connects it with the periapsis. The arrow indicates the direction of the star’s orbital motion. Gaia observational times simulated with GOST are indicated by hollow dots. Panel (d): a comparison between the TI coefficients obtained from Gaia measurements and the predictions of two scenarios. The inner thick line, the body and the edge of the boxplot respectively indicate the median, 1σ uncertainty and 3σ uncertainty.