Gaia Data Release 3
Details for the UK Gaia DR3 release event can be found on this dedicated event page.
Gaia Data Release 3 (Gaia DR3) was published on 13 June 2022. The data is available through the Gaia Archive. The Gaia DR3 catalogue builds upon the Early Data Release 3 (released on 3 December 2020) and combines, for the same stretch of time, these already-published data products with numerous new data products such as extended objects and non-single stars. For more information see Gaia Data Release 3 page.
Overview of Gaia Data Release 3 in numbers:
| # sources in Gaia DR3 | # sources in Gaia DR2 | # sources in Gaia DR1 | |
|---|---|---|---|
| Total number of sources | 1,811,709,771 | 1,692,919,135 | 1,142,679,769 |
| Gaia Early Data Release 3 | |||
| Number of sources with full astrometry | 1,467,744,818 | 1,331,909,727 | 2,057,050 |
| Number of 5-parameter sources | 585,416,709 | - | - |
| Number of 6-parameter sources | 882,328,109 | - | - |
| Number of 2-parameter sources | 343,964,953 | 361,009,408 | 1,140,622,719 |
| Gaia-CRF sources | 1,614,173 | 556,869 | 2,191 |
| Sources with mean G magnitude | 1,806,254,432 | 1,692,919,135 | 1,142,679,769 |
| Sources with mean GBP-band photometry | 1,542,033,472 | 1,381,964,755 | - |
| Sources with mean GRP-band photometry | 1,554,997,939 | 1,383,551,713 | - |
| New in Gaia Data Release 3 | Gaia DR2 | Gaia DR1 | |
| Sources with radial velocities | 33,812,183 | 7,224,631 | - |
| Sources with mean GRVS-band magnitudes | 32,232,187 | - | - |
| Sources with rotational velocities | 3,524,677 | - | - |
| Mean BP/RP spectra | 219,197,643 | - | - |
| Mean RVS spectra | 999,645 | - | - |
| Variable source analysis | 10,509,536 | 550,737 | 3,194 |
| Variability types | 24 | 6 | 2 |
| Supervised machine-learning classification for variables | 9,976,881 | 390,449 | 3,194 |
| Specific Object Studies - Cepheids | 15,021 | 9,575 | 599 |
| Specific Object Studies - Compact companions | 6,306 | - | - |
| Specific Object Studies - Eclipsing binaries | 2,184,477 | - | - |
| Specific Object Studies - Long-period variables | 1,720,588 | 89,617 | - |
| Specific Object Studies - Microlensing events | 363 | - | - |
| Specific Object Studies - Planetary transits | 214 | - | - |
| Specific Object Studies - RR Lyrae stars | 271,779 | 140,784 | 2,595 |
| Specific Object Studies - Short-timescale variables | 471,679 | 3,018 | - |
| Specific Object Studies - Solar-like rotational modulation variables | 474,026 | 147,535 | - |
| Specific Object Studies - Upper-main-sequence oscillators | 54,476 | - | - |
| Specific Object Studies - Active galactic nuclei | 872,228 | - | - |
| Photometrically-variable sources with radial-velocity time series | 1,898 | - | - |
| Sources with object classifications | 1,590,760,469 | - | - |
| Stars with emission-line classifications | 57,511 | - | - |
| Sources with astrophysical parameters from BP/RP spectra | 470,759,263 | 161,497,595 | - |
| Sources with astrophysical parameters assuming an unresolved binary | 348,711,151 | - | - |
| Sources with spectral types | 217,982,837 | - | - |
| Sources with evolutionary parameters (mass and age) | 128,611,111 | - | - |
| Hot stars with spectroscopic parameters | 2,382,015 | - | - |
| Ultra-cool stars | 94,158 | - | - |
| Cool stars with activity index | 1,349,499 | - | - |
| Sources with H-alpha emission measurements | 235,384,119 | - | - |
| Sources with astrophysical parameters from RVS spectra | 5,591,594 | - | - |
| Sources with chemical abundances from RVS spectra (up to 13 species) | 2,513,593 | - | - |
| Sources with a diffuse interstellar band (DIB) in their RVS spectrum | 472,584 | - | - |
| Non-single stars (astrometric, spectroscopic, eclipsing, orbits, trends) | 813,687 | - | - |
| Non-single stars - orbital astrometric solutions | 169,227 | - | - |
| Non-single stars - orbital spectroscopic solutions (SB1 / SB2) | 186,905 | - | - |
| Non-single stars - eclipsing binaries | 87,073 | - | - |
| QSO candidates | 6,649,162 | - | - |
| QSO candidates - redshifts | 6,375,063 | - | - |
| QSO candidates - host galaxy detected | 64,498 | - | - |
| QSO candidates - host galaxy surface brightness profiles | 15,867 | - | - |
| Galaxy candidates | 4,842,342 | - | - |
| Galaxy candidates - redshifts | 1,367,153 | - | - |
| Galaxy candidates - surface brightness profiles | 914,837 | - | - |
| Solar system objects | 158,152 | 14,099 | - |
| Solar system objects - epoch astrometry (CCD transits) | 23,336,467 | - | - |
| Solar system objects - orbits | 154,787 | - | - |
| Solar system objects - average BP/RP reflectance spectra | 60,518 | - | - |
| Solar system objects - planetary satellites | 31 | - | - |
| All-sky total galactic extinction maps at different spatial resolutions | HEALPix levels 6, 7, 8, and 9 | - | - |
| Gaia Andromeda Photometric Survey (GAPS) with lightcurves for all objects | 1,257,319 | - | - |