Osculating eccentricities (top plots) and inclinations (bottom plots) of the trans-Neptunian region after 4.5 Gyr of integration. In this simulation the giant planets do not migrate and they are set with their current orbital parameters. Blue stars show particles that end up trapped as true resonant in 3:2, 5:3, 2:1, and 5:2 MMRs. The other particles in proximity to the MMRs are linked to the phenomenon of resonance sticking, that is they are only temporarily trapped in these MMRs and are therefore excluded from the true resonant objects group.