IAU - Minor Planet Center
http://cfa-www.harvard.edu/iau/mpc.htmlIs responsible for the efficient collection, checking, and dissemination of astrometric observations and orbits for minor planets and comets, via the Minor Planet Circulars (issued monthly) and the Minor Planet Electronic Circulars (issued as necessary).
Submitted in section: Astronomy: Amateur: Solar System Observing: Asteroids: IAU - Minor Planet Center