Hipparcos ivo://nasa.heasarc/hipparcos NASA/GSFC HEASARC Perryman et al. 2026-10-09 NASA/GSFC HEASARC help desk heasarc-vo at athena.gsfc.nasa.gov Star The Hipparcos and Tycho Catalogues are the primary products of the European Space Agency's astrometric mission, Hipparcos. The satellite, which operated for four years, returned high quality scientific data from November 1989 to March 1993. Each of the catalogues contains a large quantity of very high quality astrometric and photometric data. In addition there are associated annexes featuring variability and double/multiple star data, and solar system astrometric and photometric measurements. In the case of the Hipparcos Catalogue, the principal parts are provided in both printed and machine-readable form (on CDROM). In the case of the Tycho Catalogue, results are provided in machine-readable form only (on CDROM). Although in general only the final reduced and calibrated astrometric and photometric data are provided, some auxiliary files containing results from intermediate stages of the data processing, of relevance for the more-specialised user, have also been retained for publication. (Some, but not all, data files are available from the Centre de Donnees astronomiques de Strasbourg.) The global data analysis tasks, proceeding from nearly 1000 Gbit of raw satellite data to the final catalogues, was a lengthy and complex process, and was undertaken by the NDAC and FAST Consortia, together responsible for the production of the Hipparcos Catalogue, and the Tycho Consortium, responsible for the production of the Tycho Catalogue. A fourth scientific consortium, the INCA Consortium, was responsible for the construction of the Hipparcos observing programme, compiling the best-available data for the selected stars before launch into the Hipparcos Input Catalogue. The production of the Hipparcos and Tycho Catalogues marks the formal end of the involvement in the mission by the European Space Agency and the four scientific consortia. For much more information about this catalog, such as fuller descriptions of the parameters, the user is urged to check the Hipparcos and Tycho Catalogs website at <a href="https://www.cosmos.esa.int/web/hipparcos/catalogues">https://www.cosmos.esa.int/web/hipparcos/catalogues</a>. This database table was created by the HEASARC in April 2000 based on <a href="https://cdsarc.cds.unistra.fr/ftp/cats/I/239">CDS Catalog I/239</a> file hip_main.dat.gz, the Hipparcos Main Catalog. It was updated in October 2002 to fix some entries which were missing coordinates. This is a service provided by NASA HEASARC . 1997A&A...323L..49P https://heasarc.gsfc.nasa.gov/W3Browse/all/hipparcos.html Catalog Research served-by HEASARC TAP https://heasarc.gsfc.nasa.gov/xamin/vo/cone?showoffsets&table=hipparcos& GET text/xml 180 99999 true 149.16726051 -89.78245385 0.0166666666666667 https://heasarc.gsfc.nasa.gov/xamin/vo/tap https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/getvotable.pl?name=hipparcos GET text/xml https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/w3query.pl?tablehead=name=heasarc_hipparcos&Action=More+Options&Action=Parameter+Search&ConeAdd=1 STAR CATALOG 0.0166666666666667 Optical public hipparcos Hipparcos Main Catalog name Catalog Designation from Hipparcos Number meta.id;meta.main char nullable ra Right Ascension degree pos.eq.ra;meta.main double nullable dec Declination degree pos.eq.dec;meta.main double nullable pm_ra Proper Motion in RA (mas/yr) mas/yr pos.pm;pos.eq.ra double nullable pm_dec Proper Motion in Dec (mas/yr) mas/yr pos.pm;pos.eq.dec double nullable parallax Trigonometric Parallax (mas) mas pos.parallax.trig double nullable spect_type Spectral Type src.spType char nullable "__x_ra_dec" System unit vector column double nullable "__y_ra_dec" System unit vector column double nullable "__z_ra_dec" System unit vector column double nullable "__row" System index column char nullable dec_error Standard Error in Dec (mas) mas stat.error;pos.eq.dec double nullable ccdm_n_comp Number of Components in the Entry meta.code.multip short nullable parallax_error Standard Error in Parallax (mas) mas stat.error;pos.parallax.trig double nullable diff_hip_mag Hip_Mag difference of Components mag phot.mag;arith.diff double nullable ra_error Standard Error in RA (mas) mas stat.error;pos.eq.ra double nullable var_data_annex Annex Data about Variability meta.code;src.var char nullable bv_mag_source Source of B-V (G=Ground, T=Tycho) meta.ref;phot.color;em.opt.B;em.opt.V char nullable dec_deg Declination (ICRS, Epoch J1991.25) degree pos.eq.dec char nullable vi_color_source Source of V-I Color meta.ref;phot.color;em.opt.V;em.opt.I char nullable vt_mag Mean V_T Magnitude mag phot.mag;em.opt.V double nullable hip_var_type Variability Type: [CDMPRU] meta.code;src.var char nullable crl_pmdec_dec Correlation Coefficient: (pmDec over Dec) stat.correlation;pos.pm;pos.eq.dec double nullable bv_color_error Standard Error on B-V Color mag stat.error;phot.color;em.opt.B;em.opt.V double nullable hip_mag_max Hipparcos Magnitude at Max (5th percentile) mag phot.mag;em.opt.V;stat.max double nullable crl_plx_ra Correlation Coefficient: (Parallax over RA) stat.correlation;pos.parallax.trig;pos.eq.ra double nullable dbl_ref_id Double Star Component Identifiers meta.code.multip char nullable bt_mag Mean B_T Magnitude mag phot.mag;em.opt.B double nullable vt_mag_error Standard Error on V_T Magnitude mag stat.error;phot.mag;em.opt.V double nullable bii Galactic Latitude degree pos.galactic.lat double nullable crl_pmdec_pmra Correlation Coefficient: (pmDec over pmRA) stat.correlation;pos.pm;pos.eq.dec;pos.pm;pos.eq.ra double nullable mag_ref_dbl Flag for Combined Vmag/B-V/V-I meta.code;phot.mag;em.opt.V char nullable bt_mag_error Standard Error on B_T Magnitude mag stat.error;phot.mag;em.opt.B double nullable scat_hip_mag Scatter in Median Hipparcos Magnitude mag stat.variance;phot.mag;em.opt.V double nullable cod_id Cordoba Durchmusterung (CoD) Identification meta.id.cross char nullable ccdm_history CCDM_Id Historical Status Flag meta.code.multip char nullable var_period Variability Period (days) d time.period double nullable bd_id Bonner Durchmusterung (BD) Identification meta.id.cross char nullable hd_id HD/HDE/HDEC Number meta.id.cross int nullable crl_pmra_plx Correlation Coefficient: (pmRA over Parllx) stat.correlation;pos.pm;pos.eq.ra;pos.parallax.trig double nullable ccdm_id CCDM Identifier meta.id.cross char nullable notes Flag for Existence of Notes meta.note char nullable hip_mag_ref_dbl Reference Flag for Hipparcos Magnitude meta.code.multip;phot.mag;em.opt.V char nullable pm_ra_error Standard Error in pmRA (mas/yr) mas/yr stat.error;pos.pm;pos.eq.ra double nullable cpd_id Cape Photographic Durchmusterung (CPD) Identification meta.id.cross char nullable class Browse Object Classification src.class short nullable var_flag Coarse Variability Flag meta.code;src.var short nullable dhip_mag_error Standard Error on Diff_Hip_Mag mag stat.error;phot.mag;em.opt.V;arith.diff double nullable dbl_rho Component Angular Separation (arcsec) arcsec pos.angDistance double nullable spect_type_source Source of Spectral Type meta.ref;src.spType char nullable vi_color_reduct V-I Color Used for Reductions mag phot.color;em.opt.V;em.opt.I double nullable crl_plx_dec Correlation Coefficient: (Parallax over Dec) stat.correlation;pos.parallax.trig;pos.eq.dec double nullable bt_mag_ref_dbl Reference flag for B_T and V_T meta.code.multip;phot.mag char nullable ra_deg Right Ascension (ICRS, Epoch J1991.25) degree pos.pm;pos.eq.ra char nullable astrom_mult_source Astrometry Source Flag meta.ref;pos char nullable hip_mag_min Hipparcos Magnitude at Min (95th percentile) mag phot.mag;em.opt.V;stat.min double nullable var_curv_annex Light Curve Annex meta.code;src.var char nullable vi_color Cousins V-I Color Index mag phot.color;em.opt.V;em.opt.I double nullable vmag Magnitude in Johnson V mag phot.mag;em.opt.V double nullable dbl_theta Component Position Angle (degrees) degree pos.posAng short nullable crl_pmra_ra Correlation Coefficient: (pmRA over RA) stat.correlation;pos.pm;pos.eq.ra;pos.eq.ra double nullable crl_pmra_dec Correlation Coefficient: (pmRA over Dec) stat.correlation;pos.pm;pos.eq.ra;pos.eq.dec double nullable rho_error Standard Error in Dbl_Rho (arcsec) arcsec stat.error;pos.angDistance double nullable prox_10asec 10-arcsec Proximity Flag meta.code char nullable crl_pmdec_ra Correlation Coefficient: (pmDec over RA) stat.correlation;pos.pm;pos.eq.dec;pos.eq.ra double nullable hip_mag Median Hipparcos Magnitude H_P mag phot.mag;em.opt.V double nullable crl_pmdec_plx Correlation Coefficient: (pmDec over Parllx) stat.correlation;pos.pm;pos.eq.dec;pos.parallax.trig double nullable n_obs_hip_mag Number of Observations for Median Hipparcos Magnitude meta.number;obs short nullable astrom_ref_dbl Reference Flag for Astrometry meta.ref;src char nullable survey_star Flag Indicating a Survey Star meta.code;obs char nullable dbl_mult_annex Double and Multiple Systems Flag meta.code.multip char nullable crl_dec_ra Correlation Coefficient: (Dec over RA) stat.correlation;pos.eq.dec;pos.eq.ra double nullable pm_dec_error Standard Error in pmDec (mas/yr) mas/yr stat.error;pos.pm;pos.eq.dec double nullable hip_number Identifier (HIP Number) meta.id int nullable quality_fit Goodness-of-Fit Parameter stat.fit.goodness double nullable ccdm_n_entries Number of Entries with Same CCDM meta.number short nullable id_chart Flag for Identification Chart meta.note char nullable lii Galactic Longitude degree pos.galactic.lon double nullable bv_color Johnson B-V Color mag phot.color;em.opt.B;em.opt.V double nullable dbl_soln_qual Solution Quality Flag meta.code.qual char nullable reject_percent Percentage of Rejected Data percent short nullable hip_mag_error Standard Error on Median Hipparcos Magnitude mag stat.error;phot.mag;em.opt.V double nullable vmag_source Source of V Magnitude meta.ref;phot.mag;em.opt.V char nullable vi_color_error Standard Error on V-I mag stat.error;phot.color;em.opt.V;em.opt.I double nullable