A prominent example is 1 Ceres, the largest asteroid, which is an interloper in the family once named after it (the Ceres family, now the Gefion family). Spectral characteristics can also be used to determine the membership (or otherwise) of asteroids in the outer regions of a family, as has been used e.g. for the Vesta family , whose members have an unusual composition.
The asteroid belt is a torus-shaped region in the Solar System, located roughly between the orbits of the planets Jupiter and Mars.It contains a great many solid, irregularly shaped bodies, of many sizes but much smaller than planets, called asteroids or minor planets.
La fascia principale degli asteroidi è la regione del sistema solare situata grossomodo tra le orbite di Marte e di Giove. È occupata da numerosi corpi di forma irregolare chiamati asteroidi o pianeti minori.