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Fig. 2

image

Left panel: evolutionary trajectory of a Type-P particle associated with the Set 1 of N-body simulations is represented by the black curve in an inclination i2 versus ascending node longitude Ω2 plane. The initial orbital elements of this particle are a2 = 21.935 au, e2 = 0.452, i2 = 37.129°, ω2 = 165.966°, and Ω2 = 97.285°. The inner Jupiter-mass planet of such a system has a semimajor axis a1 = 1.011 au and an eccentricity e1 = 0.237. The red curve represents the separatrix of the system, while the blue curve illustrates the pairs (Ω2, i2) that vanish the ω2 quadrupole precession rate for an inner perturber of e1 = 0.237. Right panel: temporal evolution of the argument of pericenter ω2 of the same particle.

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