Kinematics of HD 144941 (black dots for present values) with respect to the kinematic data for the white dwarf sample (grey dots with error bars) of Pauli et al. (2006). Upper left panel: orbital motion of HD 144941 in the Galactic plane. Upper right panel: meridional orbit. Backward integration by about 6.2 Myr to the Galactic equatorial plane crossing is indicated by the full black line, integration from the present to +2 Gyr by the grey line. Lower left panel: V –U velocity plot. The black ellipses render the 3σ thin (inner) and thick disc (outer) contours as specified by Pauli et al. (2006). Lower right panel: e–J_z diagram. The solid box marks the thick-disc region as specified by Pauli et al. (2006), separating the thin disc and the halo region.