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U.S. Naval Observatory Double Star CD 2006.5

Published online by Cambridge University Press:  09 August 2007

Brian D. Mason  and
William I. Hartkopf
Brian D. Mason
Affiliation:
Astrometry Department, U.S. Naval Observatory, 3450 Massachusetts Avenue, NW, Washington, DC 20392-5420, USA email: [email protected], [email protected]
William I. Hartkopf
Affiliation:
Astrometry Department, U.S. Naval Observatory, 3450 Massachusetts Avenue, NW, Washington, DC 20392-5420, USA email: [email protected], [email protected]
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Abstract

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The U.S. Naval Observatory has produced its second CDROM of double star catalogs. This successor to the 2001.0 CDROM includes the latest versions (June 30 2006) of four major double star catalogs maintained at the USNO:

  • • Washington Double Star Catalog (WDS),

  • • Second Photometric Magnitude Difference Catalog,

  • • Fourth Catalog of Interferometric Measurements of Binary Stars, and

  • • Sixth Catalog of Orbits of Visual Binary Stars.

Each of these catalogs had seen significant changes during the past six years; for example, the WDS has grown by over 150,000 measures and the number of systems in the Interferometric Catalog has nearly doubled. Other improvements include precise coordinates for the vast majority of systems, as well as new observing lists for tens of thousands of “neglected” doubles.

Also included on this CDROM is a Catalog of Linear Elements for several hundred optical pairs. These elements should prove useful for improving the components' proper motions, as well as providing scale calibration out to several tens of arcseconds.

As was done with its predecessor, the new CDROM is automatically distributed free of charge to members of the double star community and to astronomy libraries. Others may receive a complementary copy upon request.

Keywords

binaries (including multiple): generalbinaries: visualcatalogshistory and philosophy of astronomy
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2 , Symposium S240: Binary Stars as Critical Tools & Tests in Contemporary Astrophysics , August 2006 , pp. 575 - 580
Copyright
Copyright © International Astronomical Union 2007

References

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