Astrometric displacements for CC1 in 2019 (green star) and 2025 (orange square) with respect to 2016. A static background star observed in 2025 would lie in the position of the empty star; a source with null relative motion compared to the target would lie where the filled star is. Simulated background sources from the Besançon model are shown as blue dots, with their median and (16^th, 84^th) percentiles shown as a blue cross. The area encompassing bound orbits at d = 60 au is filled in red.