- Aerospaceguide.net
- Documentation on the types and origins of near earth objects such as asteroids and comets.
- Asteroids
- Details on the history of planetoids. Also contains information on the discovery of Ceres, Pallas, Vesta, and Juno.
- Astrobiology Magazine
- Presents various articles on the different types of celestial bodies; also includes image galleries and related links.
- Chiron Information and Documentation
- Compilation of data by Patrick Vanouplines on the asteroid's history and orbital elements. Comes with news updates and images.
- Comet-Asteroid Orbit Determination and Ephemeris Software
- Features written program by Jim Baer on how to calculate vector or orbital elements or geocentric ephemeredes and to identify small planets that can be classified as asteroid or comet.
- European Asteroid Research Node
- Resource for information on all known near-Earth objects.
- International Astronomical Union
- Organization responsible in naming minor space objects in the solar system. Provides details on names and designations of small planets and comets.
- Jet Propulsion Laboratory
- Showcases compilation of images and data on asteroid and comets.
- NASA - Near Earth Object Program
- Presents collection of diagrams of various space objects near Earth. Contains FAQs and links to related pages.
- NASA Near Earth Object Program
- Presenting search programs, discovery statistics, and space missions.
- NASA The Small Bodies Nodes
- Provides data archives, astronomical observations, and laboratory measurements of the small space bodies.
- Nine Planets - Sedna
- Contains information and images on the farthest heavenly body that orbits the sun.
- Nine Planets - Small Solar-System Bodies
- Displays article on the definition of small celestial bodies such as asteroids and comets. Also contains data on the Gaspra, Ida, Mathilde, Eros, the Kuiper Belt, and the Oort Cloud.
- Physics of Asteroids, Comets and Meteoroids
- Contains details on the definition, classifications, and composition of the three space objects.
- Small Comets
- Presents information on small comet discoveries and discoverers.
- Tracking News
- Resource for information on the latest small solar system bodies monitored by various observatories in the world.
- Welcome to the Planets: Small Bodies
- Offers NASA images with descriptions.
- Yale - New Haven Teachers Institute
- Research paper by Stephen Broker on the relationship of asteroids, comets, and meteorites with the planet Earth.
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