Top: Binary fit to the re-binned GRAVITY data taken on RJD 60205. The data consist of four sets of closure phases (T3PHI in units of degrees) for each telescope triangle and six sets of visibilities (|V|) for each telescope pair (colored points). The data are overplotted with the binary model fit (dashed lines). Bottom: Residuals in units of σ. The x axes correspond to the spatial frequency in the unit of M λ. The binary fit indicates a relative offset ρ ~ 2.3 mas, PA ~ 223°, and f = f_Ab/f_Aa ~ 0.7. The reduced χ² of the fit is ~2.7.