513 Centesima
513 Centesima is a 50 km Main-belt asteroid orbiting the Sun. It is one of the core members of the Eos family of asteroids. Relatively little is known about this tiny asteroid. It is not known to possess any natural satellites, so its mass is unknown. However, its brief rotation period of just over 5 hours implies that the body must be exceptionally dense, for its gravity is able counteract the centrifugal force. It was discovered 24 August 1903 by late-nineteenth- and early-twentieth-century astronomer Max Wolf.
History
Centesima was discovered on 24 August 1903 by astronomer Max Wolf at Heidelberg Observatory, where it was given the old-style provisional designation. The asteroid then received its permanent number by 1905, and was given the name Centesima by 1907. The name commemorates the asteroid as Wolf's 100th minor planet discovery.In 1925, the old-style minor planet provisional designation scheme was replaced by the system currently in use. the Minor Planet Center has since retroactively applied the new-style system to pre-1925 designations. Thus, Centesima's provisional designation given upon its discovery was changed to.