Many exoplanets (especially the close-in ones) are expected to be in spin–orbit resonances higher than 1:1. A Mercury-like terrestrial planet can, for example, become captured in a 3:2, 2:1, or 5:2 spin–orbit resonance, with the probability of each being dependent on the orbital eccentricity.
Many exoplanets (especially the close-in ones) are expected to be in spin–orbit resonances higher than 11 A Mercury-like terrestrial planet can for example become captured in a 32 21 or 52 spin–orbit resonance with the probability of each being dependent on the orbital eccentricity