Data

Gaia Data Releases
General info on Gaia Data Releases can be found here. More specific information on the Gaia's first data release is available here.
 
Main Gaia Archive
Gaia data is made available through the Gaia Archive. The Gaia Archive is located at ESAC, Madrid and is under the supervision of the ESA Science Archives Team.
 
Gaia Photometric Science Alerts
To browse the Gaia Science Alerts published so far, visit the Photometric Science Alerts website. More information about the alerts is available here.
The first Gaia photometric science alert was sent out on 30 August 2014 (see above). Since then, many more were generated to alert the community of the opportunity to observe interesting objects found by Gaia. The latest Gaia photometric science alerts can be found in the feed below.
 
Gaia Follow-Up Network for Solar System Objects
The Gaia Follow-Up Network for Solar System Objects (Gaia-FUN-SSO) has been set up in the framework of a task (DU459) of  Coordination Unit 4 (Object processing) of the DPAC Gaia consortium. Its goal is to coordinate ground-based observations on alerts 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 pre-defined scanning law. Ground-based observations are required to avoid the loss of newly detected Solar System objects and to facilitate their subsequent identification by the probe. The GAIA-FUN-SSO site provides access to solar system object alerts, including the ephemeris to help finding the targets for the registered members of the Gaia Follow-up network.
 
Search for a source in TGAS

You can now perform a simple search in TGAS using this search widget. More elaborate searches can be performed in the Gaia Archive of course. The widget below can also be added to your page by inserting this HTML code: <iframe width="500px" height="300px" src="http://gea.esac.esa.int/archive-widget-tgas/"></iframe>

 
Partner data centres

In addition to the Gaia Archive, several partner data centres offer access to the Gaia Catalogue. These partner data centres are integrated in CU9, the coordination unit responsible for Catalogue Access. They offer some extra services in coordination with the main Gaia Archive, located at ESAC.

Our partner data centers can be found:

  • Centre de Données astronomiques de Strasbourg (CDS)
  • ASI Science Data Centre (ASDC)
  • Astronomisches Rechen-Institut (ARI)
  • Institut für Astrophysik Potsdam (AIP)
 
Preliminary release (23/05/2017): Three stellar positions released to support unique occultation events
We released the astrometry for three stars to support the observations of unique occultation events. On 22 June and 23 July 2017 relatively brights stars will be occulted by the largest known centaur Chariklo. Then, on 5 October 2017 an occultation by Neptune's largest satellite, Triton, can be observed. The preliminary Gaia DR2 data for the three stars and more information about these events can be found here.
 
Preliminary release (30/09/2017): 119 stellar positions released to support unique Triton occultation events

On Thursday 5 October an important and rare astronomical event will take place: Triton will be occulting a star (called UCAC4 410-143659 or GaiaDR2 2610107907030969600). This stellar occultation will be visible from Europe across the Atlantic to the USA. A predicted occultation path has been computed using the preliminary Gaia DR2 position and proper motion for this star.

The Triton position can, however, still be improved. In order to maximise the scientific output of the occultation event, we have decided to release astrometry for 119 stars in the field surrounding Triton at this moment. The most suitable stars between magnitudes 12 and 17 have been chosen for astrometric calibration purposes. Please note that full validation of the data is not yet done and therefore some caution is required when interpreting the results. Nevertheless, we believe the data will allow improvement of the occultation prediction.

Scientists using these data to improve Triton astrometry are encouraged to make their deduced positions public so that science return can be maximised for all groups observing the event. Please keep us informed of your efforts and results in this topic.

The 119 stars are available for download through the links below:

VOT format

CSV format

When using these data, please follow the acknowledgment and citation guidelines as given here.

 

Preliminary release (02/10/2017): Additional stellar positions released to support unique Triton occultation events

In order to facilitate earlier conducted Triton campaigns from September, we provide preliminary astrometry for an additional 334 stars available for download through the links below:

VOT format

CSV format

When using these data, please follow the acknowledgment and citation guidelines as given here.