Visualisation of the kinematics of the sample stars in the Galactic potential. Galactic Cartesian coordinates XYZ are employed, with the origin shifted to the position of the Sun, adopting its galactocentric distance from the GRAVITY Collaboration (2019). Left panel: galactic plane projection. Right panel: meridional projection. ρ is the galactocentric distance and the Galactic mid-plane is indicated by the dashed line. Black dots mark the current positions of the stars, the curves show the trajectory calculated backwards in time according to the evolutionary age (see Table 3). The alternative solution ID#4a (dotted line) was calculated backwards until the Galactic mid-plane was reached, about 13 Myr ago.