Periodogram from the astrometry fit of the observations of Gaia…6464 B. The best-fit position of the Gaia…6464 B according to the ExoGRAVITY pipeline is indicated by the orange plus symbol. The position of the primary star is marked by the yellow symbol. The white contour lines are the Gaia-based position probability density of the dark companion (from inside to outside: 68, 95, and 99.7 % of the total set of position predictions). The position of the SC fiber in the field is given by the red dot, while the fiber field of view (50% flux injection limit) is shown by the red circle.