A small family of asteroids at a mean distance of about 2.75 au from the Sun. The family is unusual in that its members are of varying composition. The largest member is the T-type (308) Polyxo, diameter 129 km. The family is named after (110) Lydia, an M-type asteroid, diameter 86 km, discovered in 1870 by the French astronomer Louis Alphonse Nicolas Borrelly (1842–1926). Lydia’s orbit has a semimajor axis of 2.73 au, period 4.52 years, perihelion 2.51 au, aphelion 2.95 au, and inclination 6°.0.