Tidal Locking Resonance

Spin-orbit resonance dynamics — tidal dissipation drives capture into resonant states

Parameters

Current: 1:1 resonance

Tidal locking: Tidal torques dissipate rotational energy until the body's spin synchronizes with its orbit.

Mercury is in a 3:2 resonance — 3 rotations per 2 orbits — due to its high orbital eccentricity. The Moon is in 1:1, always showing one face.

ω̇ = −Q⁻¹·(ω − n·p/q), where n = mean motion, p:q = resonance ratio.