Cybele asteroids

The Cybele asteroids (also known as the "Cybeles") are a dynamicalgroup of asteroids, named after the asteroid 65 Cybele. Considered by some as the last outpost of an extended asteroid belt, the group consists of just over 2000 members and a few collisional families. Their orbit is defined by an osculating semi-major axis of 3.27 to 3.70 AU, with an eccentricity of less than 0.3, and an inclination less than 30°.

The dynamical Cybele group is located adjacent to the outermost asteroid belt, beyond the Hecuba gap – the 2:1 resonant zone with Jupiter, where the Griqua asteroids are located – and inside the orbital region of the Hilda asteroids (3:2 resonance), which are themselves followed by the Jupiter trojans (1:1 resonance) further out.