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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===6434 494 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)
_RAJ200002 46 42.8913478 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000-23 05 11.623817 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195002 44 26.9767511 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950-23 17 51.625234 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon210.5396120475 deg Galactic longitude at Epoch=J1991.25, proper motions taken into account (pos.galactic.lon)
_Glat-63.6523531614 deg Galactic latitude at Epoch=J1991.25, proper motions taken into account (pos.galactic.lat)
661171recno 661171  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

TYC6434 494 1  (i) TYC1-3 (TYC number) (Note T1)   (meta.id;meta.main)
Proxy    [HT] Proximity flag (T2) (meta.code)
RAhms02 46 42.70  Right ascension in h m s, ICRS (J1991.25) (T3) (pos.eq.ra)
DEdms-23 05 13.0  Declination in deg ' ", ICRS (J1991.25) (T4) (pos.eq.dec)
Vmag10.36 mag Magnitude in Johnson V (T5) (phot.mag;em.opt.V)
r_Vmag    [BDTV] Source of magnitude (Note T7)   (meta.ref;pos.frame)
RAICRS041.67791364 deg (i) alpha, degrees (ICRS, Epoch=J1991.25) (Note T8)   (pos.eq.ra)
DEICRS-23.08695009 deg (i) delta, degrees (ICRS, Epoch=J1991.25) (Note T9)   (pos.eq.dec)
AstroRef    [X] Reference flag for astrometry (Note T10)   (meta.bib)
Plx -11.10 mas Trigonometric parallax (Note T11)   (pos.parallax.trig)
pmRA 302.90 mas/yr Proper motion mu_alpha.cos(delta), ICRS (Note T12)   (pos.pm;pos.eq.ra)
pmDE 159.60 mas/yr Proper motion mu_delta, ICRS (Note T13)   (pos.pm;pos.eq.dec)
e_RAICRS 26.80 mas Standard error in RA*cos(delta) (Note T14)   (stat.error;pos.eq.ra)
e_DEICRS 25.00 mas Standard error in DE (Note T15)   (stat.error;pos.eq.dec)
e_Plx 31.10 mas Standard error in Plx (Note T16)   (stat.error;pos.parallax)
e_pmRA 31.80 mas/yr Standard error in pmRA (Note T17)   (stat.error;pos.pm;pos.eq.ra)
e_pmDE 24.80 mas/yr Standard error in pmDE (Note T18)   (stat.error;pos.pm;pos.eq.dec)
DE:RA 0.04   [-1/1] Correlation, DE/RA*cos(delta) (T19) (stat.correlation)
Plx:RA 0.13   [-1/1] Correlation, Plx/RA*cos(delta) (T20) (stat.correlation)
Plx:DE 0.04   [-1/1] Correlation, Plx/DE (T21) (stat.correlation)
pmRA:RA-0.08   [-1/1] Correlation, pmRA/RA*cos(delta) (T22) (stat.correlation)
pmRA:DE 0.07   [-1/1] Correlation, pmRA/DE (T23) (stat.correlation)
pmRA:Plx 0.20   [-1/1] Correlation, pmRA/Plx (T24) (stat.correlation)
pmDE:RA 0.02   [-1/1] Correlation, pmDE/RA*cos(delta) (T25) (stat.correlation)
pmDE:DE 0.01   [-1/1] Correlation, pmDE/DE (T26) (stat.correlation)
pmDE:Plx-0.12   [-1/1] Correlation, pmDE/Plx (T27) (stat.correlation)
pmDE:pmRA 0.15   [-1/1] Correlation, pmDE/pmRA (T28) (stat.correlation)
Nastro122   Number of transits for astrometry (T29) (meta.number)
F2 0.39   Goodness-of-fit parameter (Note T30)   (stat.fit.goodness)
HIP 12961  (i) Hipparcos HIP number (T31) (meta.id)
BTmag12.062 mag Mean BT magnitude (T32) (phot.mag;em.opt.B)
e_BTmag 0.140 mag Standard error in BTmag (T33) (stat.error;phot.mag;em.opt.B)
VTmag10.509 mag Mean VT magnitude (T34) (phot.mag;em.opt.V)
e_VTmag 0.053 mag Standard error in VTmag (T35) (stat.error;phot.mag;em.opt.V)
r_BTmagN   [DMNT] Source of photometry (Note T36)   (meta.ref)
B-V 1.303 mag Johnson B-V colour (T37) (phot.color;em.opt.B;em.opt.V)
e_B-V 0.133 mag Standard error on B-V (T38) (stat.error;phot.color;em.opt.B)
Q4   Astrometric quality flag, Q (Note T40)   (meta.code.qual)
Fs 8.4   Signal-to-noise ratio of the star image(T41) (meta.note)
Source    [HPR] Source of astrometric data (Note T42)   (meta.bib)
Nphoto113   Number of transits for photometry (T43) (meta.number)
VTscat 0.369 mag Estimate of VTmag scatter (T44) (stat.error)
VTmax10.06 mag VTmag at maximum (15th percentile) (T45) (phot.mag;em.opt.V)
VTmin11.41 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)
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)
PPM245393   [1/789676] PPM and Supplement (Note T52)   (meta.id.cross)
HD    [1/359083] HD cat. III/135 (T53) (meta.id.cross)
BD   Bonner DM I/119, I/122 (T54) (meta.id.cross)
CoDC-23 1056  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.icrs041.67871395 deg (i) Right Ascension (ICRS, epoch 2000) computed by CDS (pos.eq.ra)
_DE.icrs-23.08656217 deg (i) Declination (ICRS, epoch 2000) computed by CDS (pos.eq.dec)
  
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