Comparison between the eccentricities distribution for the evolution of the 9 original particles in the 2:5 MMR region (dotted histogram) and the averaged eccentricities for the test particles that escaped the resonance while Neptune was migrating, becoming fossilized (continuous black histogram). Peaks at e ~ 0.12 and e ~ 0.18 suggest that 2004XR₁₉₀-like orbits might be formed close to 2:5 MMR with Neptune.