ivo://org.gavo.dc/hsoy/q/downloaddoi:10.21938/HP1ASPBYWElyXb6qdqyolgThe GAVO DC teamDemleitner, M.Röser, S.Altmann, M.Bastian, U.Schilbach, E.2017-02-01T00:00:00Z2017-01-31GAVO Data Centre Team

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gavo@ari.uni-heidelberg.de+49 6221 54 1837starssurveysastrometryproper-motions HSOY is a catalog of 583'001'653 objects with precise astrometry based on PPMXL and Gaia DR1. Typical formal errors at mean epoch in proper motion are below 1 mas/yr for objects brighter than 10 mag, and about 5 mas/yr at the faint end (about 20 mag). South of -30 degrees, astrometry is significantly worse. HSOY also contains, where available, USNO-B, Gaia, and 2MASS photometry. HSOY's positions and proper motions are given for epoch J2000. The catalog becomes severely incomplete faintwards of 16 mag in the G-band. The mean epochs are typically very close to Gaia's J2015. HSOY still contains about 0.7% spurious close "binaries" (non-matched stars) from the original USNO-B (marked with non-NULL clone). Also, failed matches within Gaia DR1 contribute another 1.5% spurious pairs (marked with non-NULL comp). In both cases, astrometry presumably is sub-standard. More information is available at http://dc.g-vo.org/hsoy.2017A&A...600L...4Ahttp://dc.g-vo.org/hsoy/q/download/infoResearchTo the extent possible under law, the publisher has waived all copyright and related or neighboring rights to HSOY. For details, see the `Creative Commons CC0 1.0 Public Domain dedication <http://creativecommons.org/publicdomain/zero/1.0/>`_. Of course, you should still give proper credit when using this data as required by good scientific practice. .. image:: /static/img/cc0.png :alt: [CC0] Gaia0/0-1151544 515448.277e-20 5.369e-19http://dc.g-vo.org/hsoy/q/download/coverageOptical