Near Earth Objects (NEOs) are asteroids or comets that come relatively close to earth. They are of special interest because of the collision hazard they pose to Earth. Meteors, while certainly close to Earth, are generally not considered NEOs.
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- JPL Near-Earth Object Program NASA NEO Program Office at JPL. Overview, press releases, FAQ, 3D orbit viewer. Research information and statistics, including risk calculations for possible collisions with Earth.
- Tricky Science of Predicting Asteroid Collisions Christian Science Monitor article examining asteroid collision science.
- Arcetri Near Earth Object Precovery Program (ANEOPP) A search for NEO images in existing photographic plate archives. Archives used, procedures, personnel involved, sample images.
- DLR-Archenhold Near Earth Objects Precovery Survey (DANEOPS) A project to search photographic plate archives for images of known NEOs. Procedures used, team members, images and measurements of successful precoveries.
- Asteroid 1937 UB Hermes Efforts on 1937 UB "Hermes", a long-lost Apollo asteroid, rediscovered in 2003, now numbered (69230) Hermes.
- FMO Project A public program offered by the University of Arizona's Spacewatch Project. Volunteers review images to help find NEOs that the computers miss.
- Wikipedia: Near-Earth object Encyclopedia article covers collision danger, spacecraft access, efforts to catalog NEOs, classifications, impact hazard scales.
- Dynamics of Small Bodies Offers essays by a university teacher on near Earth object with unusual orbits, such as 3753 Cruithne, 2002 AA29, hypothetical Earth trojans and quasi-satellites.
- AstroGuard News and information about advance warning of asteroid or cometary impacts.
- Ondrejov NEO Photometric Program Activities at Ondrejov Observatory, Czech Republic, for photometry and astrometry of NEOs. Project news, binary near Earth asteroids, people involved, lists of light curve parameters.
- IAU / Near Earth Objects Summary of research on near Earth objects, activities of the International Astronomical Union's Working Group on Near Earth Objects (WGNEO).
- NeoDys, Near Earth Objects - Dynamic Site Searchable database of near Earth asteroids, risk calculations for possible collisions with Earth, orbit calculation software.