A dataset provided by the European Space Agency

DOI https://doi.org/10.5270/esa-ogmeula
Name Gaia Data Release 1 (Gaia DR1)
Mission Gaia
Portal URL https://www.cosmos.esa.int/web/gaia/data-release-1
Content URL Gaia DR1 full data repository
Gaia Archive at ESA
Version 1.0

Contents of Gaia DR1

  • Positions (α, δ) and G magnitudes for all 1,142,679,769 sources with acceptable formal standard errors on positions. Positions and individual uncertainties are computed using a generic prior and Bayes' rule.
  • The five-parameter astrometric solution - positions, parallaxes, and proper motions - for 2,057,050 stars in common between the Tycho-2 Catalogue and Gaia. This part of Gaia DR1 is based on the Tycho-Gaia Astrometric Solution (TGAS).
  • Photometric data of selected RR Lyrae and Cepheid variable stars included in the high-cadence measurements executed at the beginning of the routine phase, for a period of 4 weeks, in a special scanning mode repeatedly covering the ecliptic poles on every spin for calibration purposes.
  • Positions (α, δ) and G magnitudes for 2152 ICRF quasars.
  • Cross-matches between Gaia sources on the one hand and Hipparcos-2, Tycho-2, 2MASS PSC, GSC2.3, PPM-XL, UCAC-4, SDSS DR10 / DR12, AllWISE, and URAT-1 data on the other hand.

For more information, see https://www.cosmos.esa.int/web/gaia/data-release-1
Gaia Data Release 1 papers: https://www.cosmos.esa.int/web/gaia/dr1-papers
Gaia Data Release 1 documentation: https://gea.esac.esa.int/archive/documentation/GDR1/index.html
Publication Gaia Collaboration et al. (2016), "Gaia Data Release 1. Summary of the astrometric, photometric and survey properties", Astronomy & Astrophysics, 595, A2; https://doi.org/10.1051/0004-6361/201629512
Temporal Coverage From 25-July-2014 to 16-September-2015
Mission description Gaia is a European space mission providing astrometry, photometry, and spectroscopy of more than 1000 million stars in the Milky Way. Also data for significant samples of extragalactic and Solar system objects is made available. The Gaia Archive contains deduced positions, parallaxes, proper motions, radial velocities, and brightnesses. Complementary information on multiplicity, photometric variability, and astrophysical parameters is provided for a large fraction of sources.

Gaia Collaboration et al. (2016): "The Gaia mission", Astronomy & Astrophysics, 595, A1; https://doi.org/10.1051/0004-6361/201629272
Creator contact Gaia Helpdesk (e-mail: gaia-helpdesk@cosmos.esa.int or ticketing system: https://support.cosmos.esa.int/gaia/)
Author Gaia Collaboration 2016
Contributors Gaia Data Processing and Analysis Consortium (DPAC)
Publisher and Registrant European Space Agency
Acknowledgement This work has made use of data from the European Space Agency (ESA) mission Gaia, processed by the Gaia Data Processing and Analysis Consortium (DPAC). Funding for the DPAC has been provided by national institutions, in particular the institutions participating in the Gaia Multilateral Agreement.
Full Gaia data credits: https://www.cosmos.esa.int/web/gaia-users/credits
Citation Guidelines Gaia Collaboration, 2016, Gaia DR1, Version 1.0. https://doi.org/10.5270/esa-ogmeula