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I/239/tyc_main The Hipparcos and Tycho Catalogues (ESA 1997)
The main part of Tycho Catalogue
timeSerie
(1058332 rows)
  TYC===2019 1251 1
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Note: Note that the errors on the proper motions are large (∼50mas/yr), and therefore the positions computed at an epoch different from 1991.25 have a large (∼0.4") uncertainty.
The Tycho Epoch Photometry data can be accessed from the morePhoto column (includes VT, BT and Hp photometric data for Hipparcos stars [filter responses]

ColumnValue  Explain   (UCD)
_RAJ200014 44 59.2518432 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000+27 04 27.035724 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195014 42 47.9765238 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950+27 17 03.588281 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon039.3845875593 deg Galactic longitude at Epoch=J1991.25, proper motions taken into account (pos.galactic.lon)
_Glat+64.7840582353 deg Galactic latitude at Epoch=J1991.25, proper motions taken into account (pos.galactic.lat)
181742recno 181742  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

TYC2019 1251 1  (i) TYC1-3 (TYC number) (Note T1)   (meta.id;meta.main)
ProxyH   [HT] Proximity flag (T2) (meta.code)
RAhms14 44 59.25  Right ascension in h m s, ICRS (J1991.25) (T3) (pos.eq.ra)
DEdms+27 04 27.0  Declination in deg ' ", ICRS (J1991.25) (T4) (pos.eq.dec)
Vmag 2.50 mag Magnitude in Johnson V (T5) (phot.mag;em.opt.V)
r_VmagD   [BDTV] Source of magnitude (Note T7)   (meta.ref;pos.frame)
RAICRS221.24688268 deg (i) alpha, degrees (ICRS, Epoch=J1991.25) (Note T8)   (pos.eq.ra)
DEICRS+27.07417659 deg (i) delta, degrees (ICRS, Epoch=J1991.25) (Note T9)   (pos.eq.dec)
AstroRefX   [X] Reference flag for astrometry (Note T10)   (meta.bib)
Plx  mas Trigonometric parallax (Note T11)   (pos.parallax.trig)
pmRA  mas/yr Proper motion mu_alpha.cos(delta), ICRS (Note T12)   (pos.pm;pos.eq.ra)
pmDE  mas/yr Proper motion mu_delta, ICRS (Note T13)   (pos.pm;pos.eq.dec)
e_RAICRS 1.60 mas Standard error in RA*cos(delta) (Note T14)   (stat.error;pos.eq.ra)
e_DEICRS 1.10 mas Standard error in DE (Note T15)   (stat.error;pos.eq.dec)
e_Plx  mas Standard error in Plx (Note T16)   (stat.error;pos.parallax)
e_pmRA  mas/yr Standard error in pmRA (Note T17)   (stat.error;pos.pm;pos.eq.ra)
e_pmDE  mas/yr Standard error in pmDE (Note T18)   (stat.error;pos.pm;pos.eq.dec)
DE:RA    [-1/1] Correlation, DE/RA*cos(delta) (T19) (stat.correlation)
Plx:RA    [-1/1] Correlation, Plx/RA*cos(delta) (T20) (stat.correlation)
Plx:DE    [-1/1] Correlation, Plx/DE (T21) (stat.correlation)
pmRA:RA    [-1/1] Correlation, pmRA/RA*cos(delta) (T22) (stat.correlation)
pmRA:DE    [-1/1] Correlation, pmRA/DE (T23) (stat.correlation)
pmRA:Plx    [-1/1] Correlation, pmRA/Plx (T24) (stat.correlation)
pmDE:RA    [-1/1] Correlation, pmDE/RA*cos(delta) (T25) (stat.correlation)
pmDE:DE    [-1/1] Correlation, pmDE/DE (T26) (stat.correlation)
pmDE:Plx    [-1/1] Correlation, pmDE/Plx (T27) (stat.correlation)
pmDE:pmRA    [-1/1] Correlation, pmDE/pmRA (T28) (stat.correlation)
Nastro131   Number of transits for astrometry (T29) (meta.number)
F214.35   Goodness-of-fit parameter (Note T30)   (stat.fit.goodness)
HIP 72105  (i) Hipparcos HIP number (T31) (meta.id)
BTmag 3.955 mag Mean BT magnitude (T32) (phot.mag;em.opt.B)
e_BTmag 0.005 mag Standard error in BTmag (T33) (stat.error;phot.mag;em.opt.B)
VTmag 2.622 mag Mean VT magnitude (T34) (phot.mag;em.opt.V)
e_VTmag 0.003 mag Standard error in VTmag (T35) (stat.error;phot.mag;em.opt.V)
r_BTmagD   [DMNT] Source of photometry (Note T36)   (meta.ref)
B-V 1.129 mag Johnson B-V colour (T37) (phot.color;em.opt.B;em.opt.V)
e_B-V 0.005 mag Standard error on B-V (T38) (stat.error;phot.color;em.opt.B)
Q1   Astrometric quality flag, Q (Note T40)   (meta.code.qual)
Fs12.0   Signal-to-noise ratio of the star image(T41) (meta.note)
SourceP   [HPR] Source of astrometric data (Note T42)   (meta.bib)
Nphoto131   Number of transits for photometry (T43) (meta.number)
VTscat  mag Estimate of VTmag scatter (T44) (stat.error)
VTmax  mag VTmag at maximum (15th percentile) (T45) (phot.mag;em.opt.V)
VTmin  mag VTmag at minimum (85th percentile) (T46) (phot.mag;em.opt.V)
Var    [GN] Known variability from GCVS/NSV (Note T47)   (meta.code;src.var)
VarFlag    [UVW] Variability from Tycho (Note T48)   (src.var)
MultFlagZ   [DRSYZ] Duplicity from Tycho (Note T49)   (meta.code.multip)
morePhoto   Annex of Tycho Epoch photometry A or B, set to - for inaccessible B epoch photometry, b for reconstructed epoch photometry, c for added epoch photometry (meta.code)
m_HIPA  CCDM component identifier (T51) (meta.code.multip)
PPM    [1/789676] PPM and Supplement (Note T52)   (meta.id.cross)
HD    [1/359083] HD cat. III/135 (T53) (meta.id.cross)
BDB+27 2417  Bonner DM I/119, I/122 (T54) (meta.id.cross)
CoD   Cordoba DM I/114 (T55) (meta.id.cross)
CPD   Cape Photographic DM I/108 (T56) (meta.id.cross)
Remark    [JKLM] Notes (Note T57)   (meta.note)

EpPhotEpPhot  Tycho (and Hipparcos) Epoch Photometry, directly available for A, B and b types (meta.ref.url)
_RA.icrs221.24688268 deg (i) Right Ascension (ICRS, epoch 2000) computed by CDS (pos.eq.ra)
_DE.icrs+27.07417659 deg (i) Declination (ICRS, epoch 2000) computed by CDS (pos.eq.dec)
  
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