U.S. Naval Observatory Double Star CD 2006.5

Details U.S. Naval Observatory Double Star CD 2006.5 U.S. Naval Observatory Double Star CD 2006.5

Aug 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007iaus..240..575m&link_type=abstract

Binary Stars as Critical Tools & Tests in Contemporary Astrophysics, Proceedings of IAU Symposium #240, held 22-25 August, 2

Astronomy and Astrophysics

Astrophysics

Scientific paper

The U.S. Naval Observatory has produced its second CDROM of double star catalogs. This successor to the 2001.0 CDROM will include 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 will automatically be distributed free of charge to members of the double star community and to astronomy libraries. Others may receive a complementary copy upon request.

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