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IAU: Minor Planet Center
The official body that deals with astrometric observations, and orbits of minor planets, asteroids, and comets.
National Space Science Data Center
Provides access to a wide variety of astrophysics, space physics, solar physics, lunar, and planetary data from NASA space flight missions, in addition to selected other data, models, and software.
PDS - Planetary Data System
Solar system exploration science data archive, maintained at JPL.
Last update:January 2, 2007 at 17:57:07 UTC