Capture probability of Phobos in the ν₁ resonance with respect to the obliquity of Mars. The black curve corresponds to the capture probability computed with Eq. (52). The blue crosses and the red dots correspond to the capture probability determined for each value of the obliquity with N = 720 numericalintegrations of the resonant Hamiltonian (Eq. (19)), respectively with Q = 99.5 and Q = 5000 for the effective specific tidal dissipation. The errorbars are given by .