Map of secular resonances in the (a, e₀)-plane for a between 0.5 and 3 au, for different values of proper inclination, i₀. The left column shows the locations of v_j, j = 2,3,4,5,6, while the right column shows the locations of , j = 2,3,4,6. The color code of each resonance is indicated by the legend in the top row panels. From the top to the bottom, rows correspond to values of i₀ equal to 40°, 30°, 20°, and 10°, respectively. The dashed curves correspond to q = a₂, a₃, a₄ and Q = a₂, a₃, a₄ where q = a(1 − e), Q = a(1 + e) are the perihelion and the aphelion distance of the asteroid, respectively. We also reported the location of the Kozai librators in grey, identified by g − s = 0.