NOTICE TO OUR USERS

Commander, Naval Meteorology and Oceanography Command, is consolidating the command's web presence in accordance with Department of Defense (DoD) and Navy guidance. The U.S. Naval Oceanography portal will be the single access point for all public facing Meteorology and Oceanography products and services.

This publicly-accessible portal is currently online at http://www.usno.navy.mil, and is being populated. In the near future, non-DoD users will be redirected to this portal. DoD customers can access all operational data, products and services via the NIPRnet Naval Oceanography Portal site at https://oceanography.navy.mil (CAC required).

Questions or comments can be submitted here.

The Washington Double Star Catalog

The Washington Double Star Catalog (WDS) maintained by the United States Naval Observatory is the world's principal database of astrometric double and multiple star information. The WDS Catalog contains positions (J2000), discoverer designations, epochs, position angles, separations, magnitudes, spectral types, proper motions, and, when available, Durchmusterung numbers and notes for the components of 106,004 systems based on 768,355 means as of 16 December 2009.

Introduction and Growth of the WDS
- New BDS <---> ADS <---> WDS cross-reference
- Change in WDS format
Unpublished Measures
Neglected Doubles
Hipparcos, Tycho-2, & the TDSC
Duplicate discovery designations, Arcsecond coordinates and other topics
Single Stars
Available files and Links
Requests and Acknowledgments
WDS Catalog (~13.7MB)
- 00-06 hour section (~2.9MB)
- 06-12 hour section (~3.9MB)
- 12-18 hour section (~2.6MB)
- 18-24 hour section (~4.3MB)
Format of the current WDS
Notes file for the WDS (~1.7MB)
References and discoverer codes (~1.2MB)

If the WDS and associated databases were helpful for your research work, the following acknowledgement would be appreciated:
``This research has made use of the Washington Double Star Catalog maintained at the U.S. Naval Observatory.''
A notification of references to relevant papers is appreciated.

The Washington Double Star Catalog

Contents:

WDS Catalog (~13.7MB)

If the WDS and associated databases were helpful for your research work, the following acknowledgement would be appreciated: ``This research has made use of the Washington Double Star Catalog maintained at the U.S. Naval Observatory.'' A notification of references to relevant papers is appreciated.

If the WDS and associated databases were helpful for your research work, the following acknowledgement would be appreciated:
``This research has made use of the Washington Double Star Catalog maintained at the U.S. Naval Observatory.''
A notification of references to relevant papers is appreciated.