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Figure 4. Left: astrometric tracks of the star orbits motion in the binary star system GJ896AB made with the VLBA at 8 GHz. These tracks indicate both the star-star orbit, and the planet-induced motion for star A, with an accuracy of ~ ten of microarcseconds. Right: schematic of the surprising retrograde orbit for the planet (Curiel et al. 2022, AJ, 164, 92).
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