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The Gaia Archive is an ESA catalog that contains positions and brightnesses for 1.7 billion stars, including distances and proper motions for more than 1.3 billion stars.

The Gaia catalogue is released in stages that contain increasing amounts of information. Gaia DR1, the first data release of the spacecraft Gaia mission, based on 14 months of observations made through September 2015, took place on 13 September 2016. The second data release (DR2), which occurred on 25 April 2018, is based on 22 months of observations made between 25 July 2014 and 23 May 2016. The first part of the third data release, EDR3 (Early Data Release 3) is based on 34 months of observations collected between 25 July 2014 and 28 May 2017. The full DR3 is expected in Early 2022. The release date of the full Gaia catalogue is to be determined.

References

1. "Gaia". irsa.ipac.caltech.edu. Retrieved 2020-12-15.
2. "Gaia Archive". gea.esac.esa.int. Retrieved 2020-12-15.
3. "ESA's Gaia Mission Releases Data on More Than 1.8 Billion Stars | Astronomy | Sci-News.com". Breaking Science News | Sci-News.com. Retrieved 2020-12-15.
4. "Gaia Early Data Release 3 (Gaia EDR3)". ESA. Retrieved 12 December 2020.
5. "Gaia Data Release 3 split into two parts". ESA. 29 January 2019. Retrieved 29 January 2019.
6. "Gaia Data Release scenario". ESA. Retrieved 25 May 2021.

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