135 Hertha is a large main-belt asteroid. Named Hertha, another name for Nerthus, a Germanic fertility goddess. It orbits among the Nysa asteroid family but its classification as an M-type asteroid does not match the more common F-type asteroid for this family, suggesting that it may be an interloper. Spectroscopic analysis indicates the possible presence of hydrated silicates indicating that 135 Hertha should possibly be reclassified from its present M-type to the proposed W-type.
Lightcurve data from Hertha indicates a flattened body, and radar observations indicate that Hertha is non-metallic. One occultation of a star by the asteroid has been observed, in 2000.
Read more about 135 Hertha: Discovery, Physical Properties, Further Reading