skip to main content

gaia data release 3 documentation

20.15 Differences between the Gaia DR3 and EDR3/DR2 data models

20.15.1 Table changes between Gaia DR3 and Gaia EDR3

The following differences in Gaia DR3 with respect to Gaia EDR3 should be noted:

Astrophysical parameter tables

This entirely new group consists of the following new tables:

  • astrophysical_parameters (Section 20.2.1);

  • astrophysical_parameters_supp (Section 20.2.2);

  • total_galactic_extinction_map (Section 20.2.3);

  • total_galactic_extinction_map_opt (Section 20.2.4);

  • oa_neuron_information (Section 20.2.5);

  • oa_neuron_xp_spectra (Section 20.2.6);

  • mcmc_samples_gsp_phot (Section 20.2.7);

  • mcmc_samples_msc (Section 20.2.8).

Auxiliary tables

This category now contains commanded_scan_law (Section 20.3.1) alone. Tables pertaining to the celestial reference frame have been moved to their own group (see Section 20.15.1 below) while the Gaia DR3–to–DR2 source cross-match table has been moved to the cross-match group (next Section).


New to Gaia DR3 is a cross-match with RAVEDR6. The group of neighbouring and neighbourhood cross-match tables now includes:

  • dr2_neighbourhood (Section 20.4.1; table is identical to that published at Gaia EDR3);

  • ravedr6_best_neighbour (Section 20.4.18);

  • ravedr6_neighbourhood (Section 20.4.20);

  • ravedr6_join (Section 20.4.19).

Further details concerning the contents and use of the join tables in conjunction with the usual neighbour and neighbourhood tables can be found in Chapter 15.

Extra-galactic tables

This new group of tables presents information concerning non-stellar sources serendipitously observed by Gaia and consists of:

  • galaxy_candidates (Section 20.5.1);

  • galaxy_catalogue_name (Section 20.5.2);

  • qso_candidates (Section 20.5.3);

  • qso_catalogue_name (Section 20.5.4).

The special analyses of extra-galactic observations is discussed in Chapter 9.

Non-single stars

This new group of tables presents analysis of astrometrically and/or spectroscopically resolved multiple stellar systems and consists of:

  • nss_two_body_orbit (Section 20.6.1);

  • nss_acceleration_astro (Section 20.6.2);

  • nss_non_linear_spectro (Section 20.6.3);

  • nss_vim_fl (Section 20.6.4).

The various analyses contributing to these results are detailed in Chapter 7.


This new category contains epoch_photometry alone. Note that this table is not available for ADQL querying through the main archive Table Access Protocol but via the bulk data service (Chapter 18).

Reference frame

This new group consists of tables giving information pertaining to the astrometric coordinate reference frame as realised by Gaia in optical band passes. The contents are:

  • gaia_crf3_xm (Section 20.8.1);

  • agn_cross_id (Section 20.8.2; table is identical to that published at Gaia EDR3);

  • frame_rotator_source (Section 20.8.3; table is indentical to that published at Gaia EDR3).

Science alert tables

This new group consists of:

  • science_alerts (Section 20.9.1);

  • alerts_mixedin_sourceids (Section 20.9.2).

For further details see Section 5.7.

Solar system object tables

This new group expands considerably on data released in preliminary form in Gaia DR2 and now consists of:

  • sso_source (Section 20.11.1);

  • sso_observation (Section 20.11.2);

  • sso_reflectance_spectrum (Section 20.11.3).

The new aalysis is described in Chapter 8.

Spectroscopic tables

This new group consists of:

  • rvs_mean_spectrum (Section 20.12.1);

  • xp_summary (Section 20.12.2);

  • xp_continuous_mean_spectrum (Section 20.12.3);

  • xp_sampled_mean_spectrum (Section 20.12.4).

Of the above four tables only xp_summary is avaiable for ADQL queries via the Table Access Protocol. The other three resources are provisioned via the bulk data access services (Chapter 18).

Variability tables

This substantial group of tables expands enormously over the equivalent provided at Gaia DR2. The category now consists of:

  • vari_summary (Section 20.13.1);

  • vari_classifier_result (Section 20.13.2);

  • vari_classifier_definition (Section 20.13.3);

  • vari_classifier_class_definition (Section 20.13.4);

  • vari_agn (Section 20.13.5);

  • vari_cepheid (Section 20.13.6);

  • vari_compact_companion (Section 20.13.7);

  • vari_eclipsing_binary (Section 20.13.8);

  • vari_epoch_radial_velocity (Section 20.13.9);

  • vari_rad_vel_statistics (Section 20.13.10);

  • vari_long_period_variable (Section 20.13.11);

  • vari_microlensing (Section 20.13.12);

  • vari_ms_oscillator (Section 20.13.13);

  • vari_planetary_transit (Section 20.13.14);

  • vari_rotation_modulation (Section 20.13.15);

  • vari_rrlyrae (Section 20.13.16);

  • vari_short_timescale (Section 20.13.17).

For full details concerning the various derived product pipelines see Chapter 10.