- American Astronomical Society (AAS)
- American Meteor Society
- Astrophysical Institute of the Canary Islands
- Berkeley Illinois Maryland Association (BIMA)
- Brown University Planetary Geology
- California Space Institute
- Canadian Space Agency Meteorites and Impacts Advisory Committee
- Canadian Institute for Advanced Research
- Central Bureau for Astronomical Telegrams (CBAT)
- Harvard-Smithsonian Center for Astrophysics (CfA)
- High Energy Astrophysics Science Archive Research Center (HEASARC)
- Information Bulletin on Variable Stars
- International Astronomical Union (IAU)
- Lunar and Planetary Laboratory
- NASA/Marshall Space Sciences
- Naval Research Laboratory (NRL)
- Near-Earth Object Program (JPL)
- Planetary Science Institute
- Royal Astronomical Society (RAS)
- SETI Institute
- Space Telescope Science Institute (STScI)
- Stratospheric Observatory for Infrared Astronomy (SOFIA)
- Supernova Pages on the WWW
- University of Alabama
- University of Texas at Austin
- Uppsala Astronomical Observatory
- U.S. Geological Survey (USGS) Astrogeology Research Program
- U.S. Naval Observatory
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