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The UCAC3 Star Catalog

其他書名	A New Catalog of Optical Reference Stars for Space Surveillance
出版	Maui Economic Development Board, 2010
URL	http://books.google.com.hk/books?id=6JTRZwEACAAJ&hl=&source=gbs_api

註釋Version three of the U.S. Naval Observatory CCD Astrograph Catalog (UCAC3) was released in August 2009. As the first version of the UCAC to cover the entire sky, UCAC3 is a suitable source of optical reference stars in the R= 8 to 16 magnitude range. Containing just over 100 million objects and providing stellar positional accuracies of about 15 to 100 mas per coordinate, UCAC3 provides a background reference stellar grid considerably denser than either the Hipparcos or Tycho catalogs. Approximately 95 million objects in the catalog have listed proper motions, derived by combining UCAC observations with over 140 ground- and space-based catalogs, both published and unpublished. Proper motions are provided with an accuracy of 1 to 10 mas/yr depending on magnitude and observing history. Major differences between UCAC3 and the two preceding versions of UCAC, besides the previously mentioned all-sky coverage, include a completely new raw data reduction with improved control over systematic errors in positions, significantly improved photometry, slightly deeper limiting magnitude, and much greater completeness by inclusion of double stars and weak detections. In addition to a review of UCAC3, we will discuss the status of other star catalogs suitable for Space Surveillance and provide an update on several programs expected to produce bright- and faint-star catalogs of potential future interest to the Space Surveillance community.