Thousand-orbit realisations of NGC 6723 and the extra-tidal star time-integrated for 2 Gyr. The dark colours correspond to the most probable regions of the space, which are crossed more frequently by the simulated orbits, assuming three different values of the angular velocity of the bar (Ω_bar = 33, 43, and 53 km s⁻¹ kpc). Panels a–c: orbits of NGC 6723, using as initial conditions the observed values from Baumgardt et al. (2019); the middle and bottom rows show the orbits of the extra-tidal star, adopting the observed values from the Table 1, and an assumed heliocentric distance at 8.3 kpc (panels d–f), and 6.24 kpc (panels g–i).