A dataset provided by the European Space Agency

DOI https://doi.org/10.5270/esa-1ugzkg7
Name Gaia Early Data Release 3 (Gaia EDR3)
Mission Gaia
Portal URL https://www.cosmos.esa.int/web/gaia/early-data-release-3
Content URL Gaia EDR3 full data repository
Gaia Archive at ESA
Version 1.0

Contents of Gaia EDR3

  • The full astrometric solution (5 parameters) - positions on the sky (α, δ), parallaxes, and proper motions - for around 1.468 billion sources, with a limiting magnitude of about G ≈ 21 and a bright limit of about G ≈ 3. The astrometric solution is accompanied with some new quality indicators, like RUWE, and source image descriptors.
  • The full astrometric solution has been done as 5-parameter solution for 585 million sources and as 6-parameter solution for 882 million sources. In the 6-parameter solution, the additional fitted quantity is the so-called pseudo-colour that had to be included for sources without high-quality colour information.
  • In addition, two-parameters solutions - positions on the sky (α, δ) - for around 344 million additional sources.
  • G magnitudes for around 1.806 billion sources.
  • GBP and GRP magnitudes for around 1.542 billion and 1.555 billion sources, respectively.
  • Please be aware that the photometric system for the G, GBP, and GRP bands in Gaia EDR3 is different from the photometric system as used in Gaia DR2 and Gaia DR1.
  • Full passband definitions for G, GBP, and GRP.
  • About 1.614 million celestial reference frame (Gaia-CRF3) sources.
  • Cross-matches between Gaia EDR3 sources on the one hand and Hipparcos-2, Tycho-2 + TDSC merged, 2MASS PSC (merged with 2MASX), SDSS DR13, Pan-STARRS1 DR1, SkyMapper DR2, GSC 2.3, APASS DR9, RAVE DR5, allWISE, and URAT-1 data on the other hand.
  • Additionally, a Gaia DR2 to Gaia EDR3 match table.
  • Simulated data from Gaia Object Generator (GOG) and Gaia Universe Model Snapshot (GUMS).
  • The commanded scan law covering the Gaia EDR3 data collection period. Also the major periods where data was not sent to the ground or could not be processed are identified.

For more information, see https://www.cosmos.esa.int/web/gaia/early-data-release-3
Gaia Early Data Release 3 papers: https://www.cosmos.esa.int/web/gaia/edr3-papers
Gaia Early Data Release 3 documentation: https://gea.esac.esa.int/archive/documentation/GEDR3/index.html
Publication Gaia Collaboration et al. (2020), "Gaia Early Data Release 3. Summary of the contents and survey properties", Astronomy & Astrophysics; https://doi.org/10.1051/0004-6361/202039657
Temporal Coverage From 25 July 2014 (10:30 UTC) to 28 May 2017 (08:44 UTC)
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 2020
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, 2020, Gaia EDR3, Version 1.0. https://doi.org/10.5270/esa-1ugzkg7