Fig. 2

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Astrometric orbit (dashed line) with the primary nonmagnetic Aa component at the center (star symbol), the line of nodes (gray line), the ascending node (empty gray circle), and the periastron position (plus sign). The calculated positions on the orbit for the observation epochs (x symbols) coincide with the astrometric measurements (error ellipses corresponding to 5σ uncertainties), which are too small to be seen in the main plot. The inset plots show the zoomed-in areas around the measurements.
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