Summary of the orbital fitting results. Panel a: plots of a hundred trajectories obtained with the MCMC algorithm for the orbit of HD 100453 B. A cartoon of the dust disk is shown at the center. Panel b: evolution of separation with respect to time. The three shades of gray represent the 1, 2 and 3 σ intervals. Panel c: similar to the 2nd panel, but for the evolution of position angle with respect to time. Panel d: posterior distribution of the relative inclination between the HD 100453 B orbit and the disk plane.