Gaia Source (gaiadr2.gaia_source)

The table has 1692919135 rows, 95 columns.

Description

This table has an entry for every Gaia observed source as listed in the Main Database accumulating catalogue version from which the catalogue release has been generated. It contains the basic source parameters, that is only final data (no epoch data) and no spectra (neither final nor epoch).

Attribution

If you have used Gaia data in your research, please use the following acknowledgement:

This work has made use of data from the European Space Agency (ESA) mission Gaia (http://www.cosmos.esa.int/gaia), processed by the Gaia Data Processing and Analysis Consortium (DPAC, http://www.cosmos.esa.int/web/gaia/dpac/consortium). Funding for the DPAC has been provided by national institutions, in particular the institutions participating in the Gaia Multilateral Agreement.

More information can be found on the credit and citation instructions page.

Columns

Name Type UCD Unit Description
solution_id long meta.version

Solution Identifier

designation char meta.id
meta.main

Unique source designation (unique across all Data Releases)

source_id long meta.id
meta.main
meta.ref

Unique source identifier (unique within a particular Data Release)

random_index long meta.code

Random index used to select subsets

ref_epoch double meta.ref
time.epoch
Time[Julian Years]

Reference epoch

ra double pos.eq.ra
meta.main
Angle[deg]

Right ascension

ra_error double stat.error
pos.eq.ra
Angle[mas]

Standard error of right ascension

dec double pos.eq.dec
meta.main
Angle[deg]

Declination

dec_error double stat.error
pos.eq.dec
Angle[mas]

Standard error of declination

parallax double pos.parallax Angle[mas]

Parallax

parallax_error double stat.error
pos.parallax
Angle[mas]

Standard error of parallax

parallax_over_error float arith.ratio

Parallax divided by its error

pmra double pos.pm
pos.eq.ra
Angular Velocity[mas/year]

Proper motion in right ascension direction

pmra_error double stat.error
pos.pm
pos.eq.ra
Angular Velocity[mas/year]

Standard error of proper motion in right ascension direction

pmdec double pos.pm
pos.eq.dec
Angular Velocity[mas/year]

Proper motion in declination direction

pmdec_error double stat.error
pos.pm
pos.eq.dec
Angular Velocity[mas/year]

Standard error of proper motion in declination direction

ra_dec_corr float stat.correlation
pos.eq.ra
pos.eq.dec

Correlation between right ascension and declination

ra_parallax_corr float stat.correlation
pos.eq.ra
pos.parallax

Correlation between right ascension and parallax

ra_pmra_corr float stat.correlation
pos.eq.ra
pos.pm
pos.eq.ra

Correlation between right ascension and proper motion in right ascension

ra_pmdec_corr float stat.correlation
pos.eq.ra
pos.pm
pos.eq.dec

Correlation between right ascension and proper motion in declination

dec_parallax_corr float stat.correlation
pos.eq.dec
pos.parallax

Correlation between declination and parallax

dec_pmra_corr float stat.correlation
pos.eq.dec
pos.pm
pos.eq.ra

Correlation between declination and proper motion in right ascension

dec_pmdec_corr float stat.correlation
pos.eq.dec
pos.pm
pos.eq.dec

Correlation between declination and proper motion in declination

parallax_pmra_corr float stat.correlation
pos.parallax
pos.pm
pos.eq.ra

Correlation between parallax and proper motion in right ascension

parallax_pmdec_corr float stat.correlation
pos.parallax
pos.pm
pos.eq.dec

Correlation between parallax and proper motion in declination

pmra_pmdec_corr float stat.correlation
pos.pm
pos.eq.ra
pos.pm
pos.eq.dec

Correlation between proper motion in right ascension and proper motion in declination

astrometric_n_obs_al int meta.number

Total number of observations AL

astrometric_n_obs_ac int meta.number

Total number of observations AC

astrometric_n_good_obs_al int meta.number

Number of good observations AL

astrometric_n_bad_obs_al int meta.number

Number of bad observations AL

astrometric_gof_al float stat.fit.goodness

Goodness of fit statistic of model wrt along-scan observations

astrometric_chi2_al float stat.fit.chi2

AL chi-square value

astrometric_excess_noise double stat.value Angle[mas]

Excess noise of the source

astrometric_excess_noise_sig double stat.value

Significance of excess noise

astrometric_params_solved short meta.number

Which parameters have been solved for?

astrometric_primary_flag boolean meta.code

Primary or seconday

astrometric_weight_al float stat.weight
stat.mean
Angle[mas^-2]

Mean astrometric weight of the source

astrometric_pseudo_colour double em.wavenumber Misc[um^-1]

Astrometrically determined pseudocolour of the source

astrometric_pseudo_colour_error double em.wavenumber
stat.error
Misc[um^-1]

Standard error of the pseudocolour of the source

mean_varpi_factor_al float arith.factor
pos.parallax

Mean Parallax factor AL

astrometric_matched_observations short meta.number

Matched FOV transits used in the AGIS solution

visibility_periods_used short meta.number

Number of visibility periods used in Astrometric solution

astrometric_sigma5d_max float pos.errorEllipse
stat.max
Angle[mas]

The longest semi-major axis of the 5-d error ellipsoid

frame_rotator_object_type int meta.code

The type of the source mainly used for frame rotation

matched_observations short meta.number

Amount of observations matched to this source

duplicated_source boolean meta.code.status

Source with duplicate sources

phot_g_n_obs int meta.number

Number of observations contributing to G photometry

phot_g_mean_flux double phot.flux
stat.mean
em.opt
Flux[e-/s]

G-band mean flux

phot_g_mean_flux_error double stat.error
phot.flux
stat.mean
em.opt
Flux[e-/s]

Error on G-band mean flux

phot_g_mean_flux_over_error float arith.ratio

G-band mean flux divided by its error

phot_g_mean_mag float phot.mag
stat.mean
em.opt
Magnitude[mag]

G-band mean magnitude

phot_bp_n_obs int meta.number

Number of observations contributing to BP photometry

phot_bp_mean_flux double phot.flux
stat.mean
Flux[e-/s]

Integrated BP mean flux

phot_bp_mean_flux_error double stat.error
phot.flux
stat.mean
Flux[e-/s]

Error on the integrated BP mean flux

phot_bp_mean_flux_over_error float arith.ratio

Integrated BP mean flux divided by its error

phot_bp_mean_mag float phot.mag
stat.mean
Magnitude[mag]

Integrated BP mean magnitude

phot_rp_n_obs int meta.number

Number of observations contributing to RP photometry

phot_rp_mean_flux double phot.flux
stat.mean
Flux[e-/s]

Integrated RP mean flux

phot_rp_mean_flux_error double stat.error
phot.flux
Flux[e-/s]

Error on the integrated RP mean flux

phot_rp_mean_flux_over_error float arith.ratio

Integrated RP mean flux divided by its error

phot_rp_mean_mag float phot.mag
stat.mean
Magnitude[mag]

Integrated RP mean magnitude

phot_bp_rp_excess_factor float

BP/RP excess factor

phot_proc_mode short

Photometry processing mode

bp_rp float phot.color Magnitude[mag]

BP - RP colour

bp_g float phot.color Magnitude[mag]

BP - G colour

g_rp float phot.color Magnitude[mag]

G - RP colour

radial_velocity double spect.dopplerVeloc.opt Velocity[km/s]

Radial velocity

radial_velocity_error double stat.error
spect.dopplerVeloc.opt
Velocity[km/s]

Radial velocity error

rv_nb_transits int meta.number

Number of transits used to compute radial velocity

rv_template_teff float stat.fit.param Temperature[K]

Teff of the template used to compute radial velocity

rv_template_logg float stat.fit.param GravitySurface[log cgs]

logg of the template used to compute radial velocity

rv_template_fe_h float stat.fit.param Abundances[dex]

Fe/H of the template used to compute radial velocity

phot_variable_flag char meta.code
src.var

Photometric variability flag

l double pos.galactic.lon Angle[deg]

Galactic longitude

b double pos.galactic.lat Angle[deg]

Galactic latitude

ecl_lon double pos.ecliptic.lon Angle[deg]

Ecliptic longitude

ecl_lat double pos.ecliptic.lat Angle[deg]

Ecliptic latitude

priam_flags long meta.code

flags for the Apsis-Priam results

teff_val float phys.temperature.effective Temperature[K]

stellar effective temperature

teff_percentile_lower float phys.temperature.effective
stat.min
Temperature[K]

teffVal lower uncertainty

teff_percentile_upper float phys.temperature.effective
stat.max
Temperature[K]

teffVal upper uncertainty

a_g_val float phys.absorption.gal Magnitude[mag]

line-of-sight extinction in the G band, A_G)

a_g_percentile_lower float phys.absorption.gal
stat.min
Magnitude[mag]

aGVal lower uncertainty

a_g_percentile_upper float phys.absorption.gal
stat.max
Magnitude[mag]

aGVal upper uncertainty

e_bp_min_rp_val float Magnitude[mag]

line-of-sight reddening E(BP-RP)

e_bp_min_rp_percentile_lower float Magnitude[mag]

eBPminRPVal lower uncertainty

e_bp_min_rp_percentile_upper float Magnitude[mag]

eBPminRPVal upper uncertainty

flame_flags long meta.code

Flags for the Apsis-FLAME results

radius_val float phys.size.radius Length & Distance[Solar Radius]

stellar radius

radius_percentile_lower float phys.size.radius
stat.error
Length & Distance[Solar Radius]

radiusVal lower uncertainty

radius_percentile_upper float phys.size.radius
stat.error
Length & Distance[Solar Radius]

radiusVal upper uncertainty

lum_val float phys.luminosity Luminosity[Solar Luminosity]

stellar luminosity

lum_percentile_lower float phys.luminosity
stat.error
Luminosity[Solar Luminosity]

lumVal lower uncertainty

lum_percentile_upper float phys.luminosity
stat.error
Luminosity[Solar Luminosity]

lumVal upper uncertainty

pos char pos.eq.ra, pos.eq.dec Angle[rad], Angle[rad]

The point position of a source (ra, dec) in radian.