Model of ε Ori showing a forward computation of the closure phases with fixed parameters from the visibility model (Fig. 6). The observed closure phases reach up to nearly 4 deg, while the synthetic ones are at most 0.15 deg. If we recalibrate the observed closure phases (left column) by multiplying them by scaling factors 1/40, 1/6, 1/100, and 1/18, respectively for each of the triple baselines (right column), we see similar trends in the observed and synthetic closure phases, arg T₃ vs B/λ. We used this asymmetry of the flux to set the orientation of the star’s equator, as seen by the observer, Ω (favouring 300 deg over 120 deg).