department of defense Directory
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The Usno Astrometry Department The Astrometry Department of the U.S. Naval Observatory is responsible for the determination of fundamental positions, motions and distances of selected celestial objects. Keyword: astrometry , astronomy , department of defense , dod , full-sky astrometric mapping explorer , navy , u.s. government , ucac , wds ad.usno.navy.mil/ Add Url or Add Site to Submit Site to the department of defense Directory |