Gaia in the UK

Taking the Galactic Census


Gaia data releases

Gaia Data Release 1

Release date: 14 September 2016.

Gaia DR1 catalogue contains astrometric and photometric data for over 1 billion sources brighter than magnitude 20.7 in Gaia's photometric G-band (white light - from about 350 to 1000 nanometres). Gaia DR1 is based on observations collected between 25 July 2014 and 16 September 2015. See Gaia Data Release 1 for more information.

Gaia Data Release 1 data

Gaia DR1 data is available from the ESA Gaia Archive and from the main partner data centres:

Gaia Data Release 2

Release date: April 2018.

Gaia data release schedule

Visit Gaia Data Release Scenario for more information about Gaia data release schedule.

Gaia Photometric Science Alerts

The Gaia Science Alerts (GSA) project is searching for transient events (a transient is anything in the sky which appears, disappears or changes) in the data from Gaia, and publishes transient alerts to the world in real time on the Gaia Photometric Science Alerts website.

Extensive background information about each transient is also available from GSA website. This information includes light curves and light curve data for all transients, and spectra obtained with Gaia's blue and red photometers (BP/RP spectra) are available for most of the alerts. The spectra are uncalibrated – see Gaia spectra for information on how to interpret these spectra and some examples.

More information about the Gaia Photometric Science Alerts project, including observing advice, can be found in Alerts section of this website.

Solar System Objects

The Gaia Follow-Up Network for Solar System Objects (Gaia-FUN-SSO) has been set up to coordinate ground-based observations on alert triggered by the data processing system during the mission for the confirmation of newly detected moving objects or for the improvement of orbits of some critical targets. Gaia scans the sky following a predefined scanning law and such ground-based observations are required to avoid the loss of newly detected Solar System objects and to facilitate their subsequent identification by the satellite.

The alerts, including the ephemeris to help finding the targets, are published on Gaia-FUN-SSO  website, where they can be accessed by the registered members of the Gaia Follow-up network. The network currently consists in about 80 observers in 27 observing sites, spread all over the world (November 2016).

Gaia Community Forum

Do you have questions concerning Gaia and the usage of Gaia data? Try Gaia Community Forum.


Page last updated: 13 November 2017