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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===2027 1405 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)
_RAJ200015 04 26.7438712 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000+26 56 51.538120 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195015 02 18.0899285 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950+27 08 29.772350 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon040.3226860591 deg Galactic longitude at Epoch=J1991.25, proper motions taken into account (pos.galactic.lon)
_Glat+60.4695191283 deg Galactic latitude at Epoch=J1991.25, proper motions taken into account (pos.galactic.lat)
182306recno 182306  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

TYC2027 1405 1  (i) TYC1-3 (TYC number) (Note T1)   (meta.id;meta.main)
Proxy    [HT] Proximity flag (T2) (meta.code)
RAhms15 04 26.86  Right ascension in h m s, ICRS (J1991.25) (T3) (pos.eq.ra)
DEdms+26 56 51.6  Declination in deg ' ", ICRS (J1991.25) (T4) (pos.eq.dec)
Vmag 4.51 mag Magnitude in Johnson V (T5) (phot.mag;em.opt.V)
r_Vmag    [BDTV] Source of magnitude (Note T7)   (meta.ref;pos.frame)
RAICRS226.11190450 deg (i) alpha, degrees (ICRS, Epoch=J1991.25) (Note T8)   (pos.eq.ra)
DEICRS+26.94765993 deg (i) delta, degrees (ICRS, Epoch=J1991.25) (Note T9)   (pos.eq.dec)
AstroRef    [X] Reference flag for astrometry (Note T10)   (meta.bib)
Plx 14.80 mas Trigonometric parallax (Note T11)   (pos.parallax.trig)
pmRA -173.00 mas/yr Proper motion mu_alpha.cos(delta), ICRS (Note T12)   (pos.pm;pos.eq.ra)
pmDE -4.30 mas/yr Proper motion mu_delta, ICRS (Note T13)   (pos.pm;pos.eq.dec)
e_RAICRS 1.40 mas Standard error in RA*cos(delta) (Note T14)   (stat.error;pos.eq.ra)
e_DEICRS 1.00 mas Standard error in DE (Note T15)   (stat.error;pos.eq.dec)
e_Plx 1.70 mas Standard error in Plx (Note T16)   (stat.error;pos.parallax)
e_pmRA 1.60 mas/yr Standard error in pmRA (Note T17)   (stat.error;pos.pm;pos.eq.ra)
e_pmDE 1.50 mas/yr Standard error in pmDE (Note T18)   (stat.error;pos.pm;pos.eq.dec)
DE:RA-0.02   [-1/1] Correlation, DE/RA*cos(delta) (T19) (stat.correlation)
Plx:RA-0.10   [-1/1] Correlation, Plx/RA*cos(delta) (T20) (stat.correlation)
Plx:DE-0.06   [-1/1] Correlation, Plx/DE (T21) (stat.correlation)
pmRA:RA-0.06   [-1/1] Correlation, pmRA/RA*cos(delta) (T22) (stat.correlation)
pmRA:DE 0.28   [-1/1] Correlation, pmRA/DE (T23) (stat.correlation)
pmRA:Plx-0.07   [-1/1] Correlation, pmRA/Plx (T24) (stat.correlation)
pmDE:RA 0.30   [-1/1] Correlation, pmDE/RA*cos(delta) (T25) (stat.correlation)
pmDE:DE-0.10   [-1/1] Correlation, pmDE/DE (T26) (stat.correlation)
pmDE:Plx 0.10   [-1/1] Correlation, pmDE/Plx (T27) (stat.correlation)
pmDE:pmRA-0.26   [-1/1] Correlation, pmDE/pmRA (T28) (stat.correlation)
Nastro176   Number of transits for astrometry (T29) (meta.number)
F2-2.11   Goodness-of-fit parameter (Note T30)   (stat.fit.goodness)
HIP 73745  (i) Hipparcos HIP number (T31) (meta.id)
BTmag 6.155 mag Mean BT magnitude (T32) (phot.mag;em.opt.B)
e_BTmag 0.004 mag Standard error in BTmag (T33) (stat.error;phot.mag;em.opt.B)
VTmag 4.655 mag Mean VT magnitude (T34) (phot.mag;em.opt.V)
e_VTmag 0.002 mag Standard error in VTmag (T35) (stat.error;phot.mag;em.opt.V)
r_BTmagM   [DMNT] Source of photometry (Note T36)   (meta.ref)
B-V 1.261 mag Johnson B-V colour (T37) (phot.color;em.opt.B;em.opt.V)
e_B-V 0.004 mag Standard error on B-V (T38) (stat.error;phot.color;em.opt.B)
Q1   Astrometric quality flag, Q (Note T40)   (meta.code.qual)
Fs13.6   Signal-to-noise ratio of the star image(T41) (meta.note)
Source    [HPR] Source of astrometric data (Note T42)   (meta.bib)
Nphoto173   Number of transits for photometry (T43) (meta.number)
VTscat 0.023 mag Estimate of VTmag scatter (T44) (stat.error)
VTmax 4.63 mag VTmag at maximum (15th percentile) (T45) (phot.mag;em.opt.V)
VTmin 4.68 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)
VarFlagU   [UVW] Variability from Tycho (Note T48)   (src.var)
MultFlagR   [DRSYZ] Duplicity from Tycho (Note T49)   (meta.code.multip)
morePhotoB  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_HIP   CCDM component identifier (T51) (meta.code.multip)
PPM103769   [1/789676] PPM and Supplement (Note T52)   (meta.id.cross)
HD133582   [1/359083] HD cat. III/135 (T53) (meta.id.cross)
BDB+27 2447  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.icrs226.11143280 deg (i) Right Ascension (ICRS, epoch 2000) computed by CDS (pos.eq.ra)
_DE.icrs+26.94764948 deg (i) Declination (ICRS, epoch 2000) computed by CDS (pos.eq.dec)
  
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