RV, sky position, and motion on the sky for the long-period solution resulting from the MCMC described in the text. The black line shows the nominal best-fit solution. The dashed orange lines represent a random selection of orbital solutions drawn from the posterior distributions of the model parameters from the DE-MCMC analysis. The black dots are the observational data from HARPS (RV panel), SPHERE (X and Y panels), and Gaia and HIPPARCOS (proper motion panels).