Galactocentric Toomre diagram for confirmed galactic SySts with velocity information. On the horizontal axis we have the circular (azimuthal) velocity component, v_φ, and on the vertical axis the squared root of the sum of the squares of the (galactocentric) radial velocity, v_r, and vertical velocity, v_z. The dashed lines mark constant total velocities (v_r² + v_φ² + v_z²)^1/2 of 70 and 180 km s⁻¹, centered at the Local Standard of Rest (v_φ ≈ 238 km s⁻¹; Reid et al. 2014) for easier visualization. Thus marking the classical boundaries between thin and thick disks. Uncertainties are defined as the standard error, inferred applying a bootstrap analysis (10⁴ drawings for each system). Inferred velocities are displayed in Table 2.