The Tycho Double Star Catalogue

  title={The Tycho Double Star Catalogue},
  author={Claus Fabricius and Erik H{\o}g and Valeri V. Makarov and Brian D. Mason and Gary L. Wycoff and Sean E. Urban},
  journal={Astronomy and Astrophysics},
We report the discovery of 13 251 visual double stars, mostly with separations between 0.3 and 1 arcsec, from a dedicated re-reduction of the Tycho data from the star mapper of the ESA Hipparcos satellite. The new doublesare combined with 18 160 WDS systems identified in the Tycho-2 Catalogue, and 1220 new Tycho-2 doubles, to form the Tycho Double Star Catalogue, TDSC, a catalogue of absolute astrometry and B T , V T photometry for 66219 components of 32631 double and multiple star systems. We… 

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