Double Stars

The table of double stars contains orbital data for double star systems in the table of bright stars which fit the following criteria: the pair contains the primary star, components have a separation > 3.0" and differential visual magnitude < 3 magnitudes. A few other systems of interest are also present. Data given are the most recent measure except where predicted positions are given based on orbit or rectilinear motion calculations. The list was provided by Brian Mason and taken from the Washington Double Star Catalog (WDS, Mason, B.D. et al., Astron. Jour., 122, 3466, 2001); also available at http://www.usno.navy.mil/USNO/astrometry/optical-IR-prod/wds/double-stars/.

The positions are for those of the primary stars and taken directly from the table of bright stars. The ''primary'' is not necessarily the brighter object, but designates which object is the origin of measurements. The Discoverer Designation contains the reference for the measurement from the WDS and the Epoch column gives the year of the measurement. The visual magnitude of the primary is Tycho V-band except where indicated by an asterisk. The relative magnitude in the visual band between the two components is also given.

 
  • 2017 Double Star Orbital Data in PDF and ASCII format
  • 2016 Double Star Orbital Data in PDF and ASCII format
  • 2015 Double Star Orbital Data in PDF and ASCII format
  • 2014 Double Star Orbital Data in PDF and ASCII format
  • 2013 Double Star Orbital Data in PDF and ASCII format
  • 2012 Double Star Orbital Data in PDF and ASCII format
  • 2011 Double Star Orbital Data in PDF and ASCII format
  • 2010 Double Star Orbital Data in PDF and ASCII format
  • 2009 Double Star Orbital Data in PDF and ASCII format
  • 2008 Double Star Orbital Data in PDF and ASCII format
The Astronomical Almanac Online! 2017