Astrophysics (index)

Corotation Resonance

(an orbital resonance with the same frequency as the orbit)

A Corotation Resonance is an Orbital Resonance in which the resonant bodies orbit a larger body with the same Frequency. An example is the Trojan Asteroids which orbit the Sun near the Jupiter/Solar L4 and L5 Lagrangian Points. They orbit in Libration (epicycles) around the points, but in the grand scheme of things, they "corotate" around the Sun with Jupiter.

Corotation resonant effects contribute to the dynamics of disk/planet interactions, of galaxies, and of Accretion Disks.

(celestial mechanics,dynamics,orbits)