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DTIC ADA371016: The Act Reference Catalog, |
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by Defense Technical Information Center |
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The U.S. Naval Observatory has completed the compilation |
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of the ACT Reference Catalog, containing 988,758 stars |
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covering the entire sky. The motivation behind the ACT |
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was to provide accurate proper motions for the majority |
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of the stars in the Tycho Catalogue. To do this, |
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positions from new reductions of the Astrographic |
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Catalogue (AC 2000) were combined with those of the Tycho |
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Catalogue. The large epoch span between the two catalogs |
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yields proper motions about an order of magnitude more |
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accurate than those found in the Tycho Catalogue. The |
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astrometric data contained in the ACT Reference Catalog |
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include positions and proper motions and their |
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corresponding errors. These are on the Hipparcos system |
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(ICRS) for epoch J2000.0. Photometric and variability |
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data from Tycho are included. In addition, cross- |
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references to the Tycho, AC 2000, Bonner Durchmusterung |
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(BD), Cordoba Durchmusterung (CD), Cape Durchmusterung |
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(CPD), Henry Draper (HD), and Hipparcos catalogs are |
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given. The ACT is now available at the international data |
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centers and by contacting the authors via electronic |
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mail. |
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Date Published: 2018-04-26 12:44:52 |
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Identifier: DTIC_ADA371016 |
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Item Size: 20783084 |
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Language: english |
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Media Type: texts |
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# Topics |
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DTIC Archive; Urban, S. E.; NAVAL OBS... |
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