SpaceRef - Astronomy - Asteroids And Comets

Asteroids, Comets, and Meteors - This website contains information on a conference held at Cornell University in 1999. Included are links to all of the presentation abstracts.

Comets and Asteroids: Information and Missions from NSSDC - This page contains links to all space missions that have examined asteroids and comets as well as basic facts and images of these bodies..

European Asteroid Research Node (EARN) - E.A.R.N. is an informal association of European research groups active in asteroid research. The idea behind this service is to provide a means for easy and fast communication, exchange of data and other information in both observational and theoretical research on asteroids.

Impact - Response of the Earth System to Impact Processes - IMPACT is a scientific programme of the European Science Foundation. Impacts of asteroids or comets on the earth surface have played an important role in the evolution of the planet. The ESF IMPACT programme is an interdisciplinary programme aimed at understanding impact processes and their effects on the Earth System, including environmental, biological, and geological changes.

Minor Planet Center (MPC) - The Minor Planet Center (MPC) operates at the Smithsonian Astrophysical Observatory, under the auspices of Commission 20 of the International Astronomical Union (IAU). The MPC is responsible for the efficient collection, (computation,) 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).

Planetary Photojournal Images of comets and asteroids - This page at NASA's Planetary Photojournal provides access to a database of images of comets and asteroids from solar system exploration programs and other sources. Images are available in sizes ranging from small web images to large, publication quality files.

Small Bodies Node of the NASA Planetary Data System - The Planetary Data System (PDS) is a distributed archive of solar system data, prepared in a standard format for use primarily by astronomical observers and mission planners, as well as educators and students. The Small Bodies Node (SBN) specializes in data concerning asteroids, comets and interplanetary dust.

Spacewatch - The primary goal of Spacewatch is to explore the various populations of small objects in the solar system, and study the statistics of asteroids and comets in order to investigate the dynamical evolution of the solar system. Spacewatch also finds potential targets for space missions, provides astrometric support for spacecraft mission planning, and finds objects that might present a hazard to the Earth.