Space.com: More Moons Around Earth?
- Article describing the asteroid Cruithne, and orbital motions at gravitational balance points in space that temporarily pull asteroids into Earth orbits.
- http://www.space.com/scienceastronomy/solarsystem/second_moon_991029.html

Asteroids
- Chart showing relative sizes, distance from the sun, inclination/eccentricity, shape, and color. Other charts showing position in the solar system. Summary data.
- http://alumnus.caltech.edu/~marcsulf/asteroid/asteroid.html

Nine Planets: Asteroids
- Overview of current scientific knowledge of asteroids.
- http://www.nineplanets.org/asteroids.html

Minor Planets
- Offers updated alphabetical list of minor planet names.
- http://cfa-www.harvard.edu/iau/lists/MPNames.html

Wikipedia: Asteroid
- Encyclopedia article covers history, groups of asteroids, spectral types. Tables of largest and notable asteroids.
- http://en.wikipedia.org/wiki/Asteroid

Exploring The Planets: Asteroids
- Offers general scientific overview with history and images by the National Air and Space Museum.
- http://www.nasm.si.edu/research/ceps/etp/asteroids/index.htm

European Asteroid Research Node
- Association of European research groups active in asteroid research. Links to member sites and resources useful for asteroid research.
- http://earn.dlr.de/

Physical studies of asteroids at Poznan Observatory
- Light curves, database of asteroid spin vectors.
- http://www.astro.amu.edu.pl/Science/Asteroids/

Suspected and known binary asteroids
- List of suspected binary asteroids with bibliographic references.
- http://www.imcce.fr/observateur/binast/binary_ast.php

Serra Designs - Asteroid Model Series
- Scientifically accurate scale models of asteroids.
- http://www.serradesignsinc.com/ast_models.htm

Asteroid Groups
- Graphs and animations showing major asteroid groups and families.
- http://sajri.astronomy.cz/asteroidgroups/groups.htm

Solar System Exploration: Asteroids
- Basic description, overview of asteroid science.
- http://solarsystem.nasa.gov/planets/profile.cfm?Object=Asteroids

Asteroids with Satellites
- Lists of known or suspected asteroids with satellites. Also history, graphs, links.
- http://www.johnstonsarchive.net/astro/asteroidmoons.html

List of Double Minor Planets
- Known or suspected asteroids with satellites.
- http://hea.iki.rssi.ru/~denis/doublemp.html

Bill Bottke's Asteroid Research
- Collisions, tidal disruption, dynamics, planetary impacts, crater chains and doublet craters.
- http://www.boulder.swri.edu/~bottke/

Asteroid Articles
- Archive of articles posted at the Planetary Science Research Discoveries site at the University of Hawaii.
- http://www.psrd.hawaii.edu/Archive/Archive-Asteroids.html

Small Main-Belt Asteroid Spectroscopic Survey II
- Data sets and references to scientific literature describing results.
- http://smass.mit.edu/

Dan Durda's Research Interests
- Airborne observations, Vulcanoids, various asteroid collision effects.
- http://www.boulder.swri.edu/~durda/research.html

Asteroid Models
- Research in determining asteroid shapes through photometric data and multiple data sources. Reference documents, introduction, links.
- http://www.astro.helsinki.fi/~kaselain/asteroids.html

Small World Atlas 2000
- Cartography of irregularly shaped asteroids and satellites. Maps, images, related papers.
- http://www.ssc.uwo.ca/geography/spacemap/

Asteroids with Canadian Connections
- A list of asteroids whose names are known to have a Canadian connection, usually because they are named after a Canadian.
- http://www.rasc.ca/faq/asteroids/home.htm

News on Hilda Asteroids
- A review of current knowledge of this dynamical group. Overview, low eccentricity Hildas, the Schubart family, numbered Hildas of the Palomar-Leiden survey.
- http://www.rzuser.uni-heidelberg.de/~s24/hilda.htm

Eric Weisstein's World of Astronomy: Asteroids
- Dynamical groups of asteroids, mathematical formulas, the Tunguska event.
- http://scienceworld.wolfram.com/astronomy/topics/Asteroids.html

Introduction to Asteroids
- Covers history, asteroid composition, Earth collisions.
- http://www.mira.org/fts0/planets/098/text/txt001z.htm

Minor Planet Observer
- Lightcurve collaboration, physical studies, software, Palmer Divide Observatory.
- http://www.minorplanetobserver.com/

Association of Lunar and Planetary Observers: Minor Planets Section
- Photometry and shape modeling program, magnitude alert project, finder charts, visual observing of minor planets.
- http://www.lpl.arizona.edu/~rhill/alpo/minplan.html

Minor Planet Groups and Families
- Listing and description of dynamical groups and physical families of asteroids.
- http://www.projectpluto.com/mp_group.htm

Views of the Solar System: Asteroid Introduction
- Background information, details on selected asteroids, image gallery.
- http://www.solarviews.com/eng/asteroid.htm

Asteroid Radar Research
- NASA JPL asteroid research using radar. Introduction, scientific activity, asteroid images.
- http://echo.jpl.nasa.gov/

AstDys, Asteroids - Dynamic Site
- Indexed, searchable database of asteroid data.
- http://hamilton.dm.unipi.it/cgi-bin/astdys/astibo

Asteroid Observing Services from Lowell Observatory
- Tools to help observers select targets and plan observations. Also, orbital elements, reference star catalog data and software, link to Lowell Observatory Near Earth Object Search (LONEOS).
- http://asteroid.lowell.edu/

Windows to the Universe: Asteroids
- Description, data on selected asteroids, images.
- http://www.windows.ucar.edu/cgi-bin/tour_def/our_solar_system/asteroids.html