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I/337/tgas Gaia DR1 (Gaia Collaboration, 2016)
TGAS: Subset of GaiaSource comprising those stars in the Hipparcos and Tycho-2 Catalogues for which a full 5-parameter astrometric solution has been possible in Gaia Data Release (TgasSource) (Download Tgas Sources as vo tables, fits or csv here) (original column names in green) (2057050 rows)
  recno=503615
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ColumnValue  Explain   (UCD)
_RAJ200021 42 42.802440169 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000+43 35 09.87628496 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195021 40 44.440876345 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950+43 21 23.08295307 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon090.559605745116 deg Galactic longitude at Epoch=J2015, proper motions taken into account (pos.galactic.lon)
_Glat-07.110791664367 deg Galactic latitude at Epoch=J2015, proper motions taken into account (pos.galactic.lat)
503615recno 503615  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

hip    Hipparcos identifier (hip) (meta.id.cross)
tycho2_id3196-723-1  Tycho 2 identifier (tycho2_id) (meta.id.cross)
solution_id1635378410781933568  Solution ID (solution_id) (Note G1)   (meta.id;meta.version)
source_id1972957892448494592  (i) Source ID (source_id) (Note G2)   (meta.id;meta.main)
random_index 962839  Random index used to select subsets (random_index) (Note G3)   (meta.code)
ref_epoch2015.0 yr [2015.0] Reference epoch in Julian years (ref_epoch) (Note G4)   (meta.ref;time.epoch)
ra325.6789941280 deg (i) Right ascension (ICRS) at epoch 2015.0 (ra) (pos.eq.ra;meta.main)
ra_error 0.246 mas (i) Standard error of right ascension (ra_error) (stat.error;pos.eq.ra)
dec+43.5862132060 deg (i) Declination (ICRS) at epoch 2015.0 (dec) (pos.eq.dec;meta.main)
dec_error 0.236 mas (i) Standard error of declination (dec_error) (stat.error;pos.eq.dec)
parallax 8.56 mas (i) Absolute barycentric stellar parallax of the source at the reference epoch Epoch (parallax) (pos.parallax)
parallax_error 0.33 mas (i) Standard error of parallax (parallax_error) (stat.error;pos.parallax)
pmRA 113.106 mas/yr (i) Proper motion in right ascension direction (pmRA) (Note G5)   (pos.pm;pos.eq.ra)
pmra_error 1.157 mas/yr (i) Standard error of proper motion in right ascension direction (pmra_error) (stat.error;pos.pm;pos.eq.ra)
pmdec 32.750 mas/yr (i) Proper motion in declination direction (pmdec) (Note G6)   (pos.pm;pos.eq.dec)
pmdec_error 0.613 mas/yr (i) Standard error of proper motion in declination direction (pmdec_error) (stat.error;pos.pm;pos.eq.dec)
ra_dec_corr 0.749  Correlation between right ascension and declination (ra_dec_corr) (stat.correlation)
ra_parallax_corr 0.545  Correlation between right ascension and parallax (ra_parallax_corr) (stat.correlation)
ra_pmra_corr-0.805  Correlation between right ascension and proper motion in right ascension (ra_pmra_corr) (stat.correlation)
ra_pmdec_corr-0.466  Correlation between right ascension and proper motion in declination (ra_pmdec_corr) (stat.correlation)
dec_parallax_corr 0.396  Correlation between declination and parallax (dec_parallax_corr) (stat.correlation)
dec_pmra_corr-0.657  Correlation between declination and proper motion in right ascension (dec_pmra_corr) (stat.correlation)
dec_pmdec_corr-0.348  Correlation between declination and proper motion in declination (dec_pmdec_corr) (stat.correlation)
parallax_pmra_corr-0.813  Correlation between parallax and proper motion in right ascension (parallax_pmra_corr) (stat.correlation)
parallax_pmdec_corr-0.011  Correlation between parallax and proper motion in declination (parallax_pmdec_corr) (stat.correlation)
pmra_pmdec_corr 0.347  Correlation between proper motion in right ascension and proper motion in declination (pmra_pmdec_corr) (stat.correlation)
astrometric_n_obs_al 125  Total number of observations AL (astrometric_n_obs_al) (Note G7)   (meta.number)
astrometric_n_obs_ac 125  Total number of observations AC (astrometric_n_obs_ac) (Note G8)   (meta.number)
astrometric_n_good_obs_al 125  Number of good observations AL (astrometric_n_good_obs_al) (Note G9)   (meta.number)
astrometric_n_good_obs_ac 122  Number of good observations AC (astrometric_n_good_obs_ac) (Note G9)   (meta.number)
astrometric_n_bad_obs_al 0  Number of bad observations AL (astrometric_n_bad_obs_al) (Note G10)   (meta.number)
astrometric_n_bad_obs_ac 3  Number of bad observations AC (astrometric_n_bad_obs_ac) (Note G10)   (meta.number)
astrometric_delta_q    Hipparcos/Gaia data discrepancy (Hipparcos subset of TGAS only) (astrometric_delta_q) (Note G11)   (stat.value)
astrometric_excess_noise 0.55 mas Excess noise of the source (astrometric_excess_noise) (Note G12)   (stat.value)
astrometric_excess_noise_sig 2.7e+02  Significance of excess noise (astrometric_excess_noise_sig) (Note G13)   (stat.value)
astrometric_primary_flag1   [1] Primary or secondary (astrometric_primary_flag) (Note G14)   (meta.code)
astrometric_relegation_factor 5.39  Relegation factor (astrometric_relegation_factor) (arith.factor)
astrometric_weight_al 3.227 mas-2 Mean astrometric weight of the source in the AL direction (astrometric_weight_al) (stat.weight;stat.mean)
astrometric_weight_ac 2.04e-05 mas-2 Mean astrometric weight of the source in the AC direction (astrometric_weight_ac) (stat.weight;stat.mean)
astrometric_priors_used5   [3/5] Type of prior used in in the astrometric solution (astrometric_priors_used) (Note G15)   (meta.code)
matched_observations 23  Amount of observations matched to this source (matched_observations) (Note G16)   (meta.number)
duplicated_source0   [0/1] Source with duplicate sources (duplicated_source) (Note G17)   (meta.code)
scan_direction_strength_k1 0.208   [0/1] Degree of concentration of scan directions across the source (scan_direction_strength_k1) (Note G18)   (meta.code)
scan_direction_strength_k2 0.461   [0/1] Degree of concentration of scan directions across the source (scan_direction_strength_k2) (Note G18)   (meta.code)
scan_direction_strength_k3 0.102   [0/1] Degree of concentration of scan directions across the source (scan_direction_strength_k3) (Note G18)   (meta.code)
scan_direction_strength_k4 0.541   [0/1] Degree of concentration of scan directions across the source (scan_direction_strength_k4) (Note G18)   (meta.code)
scan_direction_mean_k1-133.60583000 deg Mean position angle of scan directions across the source (scan_direction_mean_k1) (Note G19)   (meta.code)
scan_direction_mean_k2-56.44201700 deg Mean position angle of scan directions across the source (scan_direction_mean_k2) (Note G19)   (meta.code)
scan_direction_mean_k3 21.25204800 deg Mean position angle of scan directions across the source (scan_direction_mean_k3) (Note G19)   (meta.code)
scan_direction_mean_k4-39.28271500 deg Mean position angle of scan directions across the source (scan_direction_mean_k4) (Note G19)   (meta.code)
phot_g_n_obs 44  Number of observations contributing to G photometry (phot_g_n_obs) (meta.number)
phot_g_mean_flux 374750.64961 e-/s (i) G-band mean flux (phot_g_mean_flux) (phot.flux;stat.mean;em.opt)
phot_g_mean_flux_error 8246.59471 e-/s (i) Error on G-band mean flux (phot_g_mean_flux_error) (stat.error)
phot_g_mean_mag11.590 mag (i) G-band mean magnitude (phot_g_mean_mag) (Note G20)   (phot.mag;stat.mean;em.opt)
phot_variable_flagNOT_AVAILABLE  Photometric variability flag (phot_variable_flag) (Note G21)   (meta.code;src.var)
l 90.5596080649 deg (i) Galactic longitude at epoch 2015.0 (l) (pos.galactic.lon)
b -7.1107931957 deg (i) Galactic latitude at epoch 2015.0 (b) (pos.galactic.lat)
ecl_lon350.4675839270 deg Ecliptic longitude at epoch 2015.0 (ecl_lon) (pos.ecliptic.lon)
ecl_lat 52.6558973172 deg Ecliptic latitude at epoch 2015.0 (ecl_lat) (pos.ecliptic.lat)

_RA.icrs325.6783435007 deg (i) Right Ascension (ICRS, epoch 2000) computed by CDS (pos.eq.ra)
_DE.icrs+43.5860767458 deg (i) Declination (ICRS, epoch 2000) computed by CDS (pos.eq.dec)
  
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