Rotation-Orbit resonance: Finally, in some cases where the orbit is eccentric and the tidal effect is relatively weak, the smaller body may end up in an orbital resonance, rather than tidally locked.

• 旋转-轨道的共呜:最后,在轨道是古怪的一些情形和哪里潮汐的效果是相对地弱的,较小的身体可能在一个轨道的共呜中结束,并非潮汐地锁。