Obliquity of the Cassini equilibrium C₂ and the maximum width of the associated resonance zone (gray area) as a function of the Eulalia’s dynamical flattening Δ. The solid line labeled C₂(s₆) corresponds to the planetary frequency s₆, the line labeled C₂(s) corresponds to the proper frequency s. For Δ ≥ 0.13 both resonant zones exist and overlap, producing chaotic obliquity evolution within the combined gray area (Fig. 6). These results assume the current rotation period P ≃ 29 h of Eulalia. Our pole solutions yield the current Eulalia’s obliquity ≃ (40°−60°), which could be affected by the chaotic zone unless very low or high value of Δ.