Ruprecht-Karls-Universität Heidelberg

Status of Gaia

Gaia is performing its mission, taking regular measurements each day!

Detailed status


  • Gaia was launched on December 19, 2013.
  • Gaia entered an orbit around the Lagrange point L2 on January 6, 2014.
  • Commissioning officially ended on July 18, 2014.
  • Afterwards the regular scientific measurements started (nominal mission: 5 years).
  • Gaia Data Release 1 (first Gaia catalogue): September 14, 2016:

    • Positions (α, δ) and G magnitudes for all sources with acceptable formal standard errors on positions (insgesamt 1,142,679,769 entries).

    • The five-parameter astrometric solution - positions, parallaxes, and proper motions - for 2,057,050 stars in common between the Tycho-2 Catalogue and Gaia is contained in Gaia DR1.
    • At the beginning of the routine phase, for a period of 4 weeks, a special scanning mode repeatedly covering the ecliptic poles on every spin was executed for calibration purposes. Photometric data of selected RR Lyrae (2595) and Cepheid (599) variable stars including these high-cadence measurements are contained in Gaia DR1.
    • Positions (α, δ) and G magnitudes for 2152 ICRF quasars.

  • Gaia Data Release 2 is foreseen for April 2018.
  • End of nominal mission: 2019.
  • The final release is planned for 2022.
Editor: Webmaster
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