Minor Planet Center

The Minor Planet Center (MPC) is an organization for collecting, organizing, and distributing data on minor planets (e.g., asteroids, comets), operating as a service of the International Astronomical Union (IAU). More than a million minor planets are recorded, and data from the MPC is valuable for astronomical studies. Among these, the MPC specifically tracks near-Earth objects (NEOs), recording, predicting and alerting on close encounters with Earth.