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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===2525 2445 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)
_RAJ200011 41 03.0151760 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000+34 12 05.922442 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195011 38 25.2890754 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950+34 29 02.881209 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon183.5464481767 deg Galactic longitude at Epoch=J1991.25, proper motions taken into account (pos.galactic.lon)
_Glat+73.3243376327 deg Galactic latitude at Epoch=J1991.25, proper motions taken into account (pos.galactic.lat)
233129recno 233129  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

TYC2525 2445 1  (i) TYC1-3 (TYC number) (Note T1)   (meta.id;meta.main)
Proxy    [HT] Proximity flag (T2) (meta.code)
RAhms11 41 03.03  Right ascension in h m s, ICRS (J1991.25) (T3) (pos.eq.ra)
DEdms+34 12 09.2  Declination in deg ' ", ICRS (J1991.25) (T4) (pos.eq.dec)
Vmag 5.31 mag Magnitude in Johnson V (T5) (phot.mag;em.opt.V)
r_Vmag    [BDTV] Source of magnitude (Note T7)   (meta.ref;pos.frame)
RAICRS175.26260467 deg (i) alpha, degrees (ICRS, Epoch=J1991.25) (Note T8)   (pos.eq.ra;meta.main)
DEICRS+34.20256047 deg (i) delta, degrees (ICRS, Epoch=J1991.25) (Note T9)   (pos.eq.dec;meta.main)
AstroRef    [X] Reference flag for astrometry (Note T10)   (meta.bib)
Plx 103.00 mas Trigonometric parallax (Note T11)   (pos.parallax.trig)
pmRA -14.10 mas/yr Proper motion mu_alpha.cos(delta), ICRS (Note T12)   (pos.pm;pos.eq.ra)
pmDE -376.60 mas/yr Proper motion mu_delta, ICRS (Note T13)   (pos.pm;pos.eq.dec)
e_RAICRS 2.20 mas Standard error in RA*cos(delta) (Note T14)   (stat.error;pos.eq.ra)
e_DEICRS 2.10 mas Standard error in DE (Note T15)   (stat.error;pos.eq.dec)
e_Plx 2.70 mas Standard error in Plx (Note T16)   (stat.error;pos.parallax)
e_pmRA 2.70 mas/yr Standard error in pmRA (Note T17)   (stat.error;pos.pm;pos.eq.ra)
e_pmDE 2.50 mas/yr Standard error in pmDE (Note T18)   (stat.error;pos.pm;pos.eq.dec)
DE:RA-0.10   [-1/1] Correlation, DE/RA*cos(delta) (T19) (stat.correlation)
Plx:RA 0.19   [-1/1] Correlation, Plx/RA*cos(delta) (T20) (stat.correlation)
Plx:DE 0.07   [-1/1] Correlation, Plx/DE (T21) (stat.correlation)
pmRA:RA-0.33   [-1/1] Correlation, pmRA/RA*cos(delta) (T22) (stat.correlation)
pmRA:DE-0.23   [-1/1] Correlation, pmRA/DE (T23) (stat.correlation)
pmRA:Plx-0.12   [-1/1] Correlation, pmRA/Plx (T24) (stat.correlation)
pmDE:RA-0.27   [-1/1] Correlation, pmDE/RA*cos(delta) (T25) (stat.correlation)
pmDE:DE 0.02   [-1/1] Correlation, pmDE/DE (T26) (stat.correlation)
pmDE:Plx-0.04   [-1/1] Correlation, pmDE/Plx (T27) (stat.correlation)
pmDE:pmRA 0.02   [-1/1] Correlation, pmDE/pmRA (T28) (stat.correlation)
Nastro 98   Number of transits for astrometry (T29) (meta.number)
F2 0.80   Goodness-of-fit parameter (Note T30)   (stat.fit.goodness)
HIP 56997  (i) Hipparcos HIP number (T31) (meta.id)
BTmag 6.226 mag Mean BT magnitude (T32) (phot.mag;em.opt.B)
e_BTmag 0.004 mag Standard error in BTmag (T33) (stat.error;phot.mag)
VTmag 5.388 mag Mean VT magnitude (T34) (phot.mag;em.opt.V)
e_VTmag 0.003 mag Standard error in VTmag (T35) (stat.error;phot.mag)
r_BTmagM   [DMNT] Source of photometry (Note T36)   (meta.ref)
B-V 0.738 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)
Fs10.1   Signal-to-noise ratio of the star image(T41) (meta.note)
Source    [HPR] Source of astrometric data (Note T42)   (meta.bib)
Nphoto105   Number of transits for photometry (T43) (meta.number)
VTscat 0.028 mag Estimate of VTmag scatter (T44) (stat.error)
VTmax 5.36 mag VTmag at maximum (15th percentile) (T45) (phot.mag;em.opt.V)
VTmin 5.42 mag VTmag at minimum (85th percentile) (T46) (phot.mag;em.opt.V)
VarN   [GN] Known variability from GCVS/NSV (Note T47)   (meta.code;src.var)
VarFlag    [UVW] Variability from Tycho (Note T48)   (src.var)
MultFlagY   [DRSYZ] Duplicity from Tycho (Note T49)   (meta.code.multip)
morePhotoA  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)
PPM 76016   [1/789676] PPM and Supplement (Note T52)   (meta.id.cross)
HD101501   [1/359083] HD cat. III/135 (T53) (meta.id.cross)
BDB+35 2270  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.icrs175.26256323 deg (i) Right Ascension (ICRS, epoch 2000) computed by CDS (pos.eq.ra)
_DE.icrs+34.20164512 deg (i) Declination (ICRS, epoch 2000) computed by CDS (pos.eq.dec)
  
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