Dediced to minor planets and astronomical imageing. Contains information on minor planets, building observatories and robotic telescopes and remote systems.

We are the official body that deals with astrometric observations and orbits of minor planets (asteroids) and comets.

astorb.dat is an ASCII file of high-precision osculating orbital elements, ephemeris uncertainties, and some additional data for all the numbered asteroids and the vast majority of unnumbered asteroids (multi-apparition and single-apparition) for which it is possible to make reasonably determinate computations.

These pages contain information about the Minor Planet Mailing list as well as a number of interesting and important ideas for the minor planet observer.