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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===2897 474 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)
_RAJ200004 44 32.9905838 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000+39 52 31.664925 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195004 41 06.5324943 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950+39 47 02.757992 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon163.7947503759 deg Galactic longitude at Epoch=J1991.25, proper motions taken into account (pos.galactic.lon)
_Glat-03.8293966228 deg Galactic latitude at Epoch=J1991.25, proper motions taken into account (pos.galactic.lat)
282612recno 282612  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

TYC2897 474 1  (i) TYC1-3 (TYC number) (Note T1)   (meta.id;meta.main)
ProxyH   [HT] Proximity flag (T2) (meta.code)
RAhms04 44 32.97  Right ascension in h m s, ICRS (J1991.25) (T3) (pos.eq.ra)
DEdms+39 52 32.0  Declination in deg ' ", ICRS (J1991.25) (T4) (pos.eq.dec)
Vmag 8.37 mag Magnitude in Johnson V (T5) (phot.mag;em.opt.V)
r_Vmag    [BDTV] Source of magnitude (Note T7)   (meta.ref;pos.frame)
RAICRS071.13736987 deg (i) alpha, degrees (ICRS, Epoch=J1991.25) (Note T8)   (pos.eq.ra)
DEICRS+39.87556675 deg (i) delta, degrees (ICRS, Epoch=J1991.25) (Note T9)   (pos.eq.dec)
AstroRefX   [X] Reference flag for astrometry (Note T10)   (meta.bib)
Plx 5.20 mas Trigonometric parallax (Note T11)   (pos.parallax.trig)
pmRA 28.70 mas/yr Proper motion mu_alpha.cos(delta), ICRS (Note T12)   (pos.pm;pos.eq.ra)
pmDE -42.90 mas/yr Proper motion mu_delta, ICRS (Note T13)   (pos.pm;pos.eq.dec)
e_RAICRS 11.90 mas Standard error in RA*cos(delta) (Note T14)   (stat.error;pos.eq.ra)
e_DEICRS 10.20 mas Standard error in DE (Note T15)   (stat.error;pos.eq.dec)
e_Plx 13.10 mas Standard error in Plx (Note T16)   (stat.error;pos.parallax)
e_pmRA 12.50 mas/yr Standard error in pmRA (Note T17)   (stat.error;pos.pm;pos.eq.ra)
e_pmDE 12.10 mas/yr Standard error in pmDE (Note T18)   (stat.error;pos.pm;pos.eq.dec)
DE:RA 0.33   [-1/1] Correlation, DE/RA*cos(delta) (T19) (stat.correlation)
Plx:RA 0.42   [-1/1] Correlation, Plx/RA*cos(delta) (T20) (stat.correlation)
Plx:DE-0.07   [-1/1] Correlation, Plx/DE (T21) (stat.correlation)
pmRA:RA-0.28   [-1/1] Correlation, pmRA/RA*cos(delta) (T22) (stat.correlation)
pmRA:DE-0.22   [-1/1] Correlation, pmRA/DE (T23) (stat.correlation)
pmRA:Plx-0.06   [-1/1] Correlation, pmRA/Plx (T24) (stat.correlation)
pmDE:RA-0.25   [-1/1] Correlation, pmDE/RA*cos(delta) (T25) (stat.correlation)
pmDE:DE-0.42   [-1/1] Correlation, pmDE/DE (T26) (stat.correlation)
pmDE:Plx-0.13   [-1/1] Correlation, pmDE/Plx (T27) (stat.correlation)
pmDE:pmRA 0.43   [-1/1] Correlation, pmDE/pmRA (T28) (stat.correlation)
Nastro 67   Number of transits for astrometry (T29) (meta.number)
F2 2.43   Goodness-of-fit parameter (Note T30)   (stat.fit.goodness)
HIP 22050  (i) Hipparcos HIP number (T31) (meta.id)
BTmag 8.965 mag Mean BT magnitude (T32) (phot.mag;em.opt.B)
e_BTmag 0.020 mag Standard error in BTmag (T33) (stat.error;phot.mag;em.opt.B)
VTmag 8.421 mag Mean VT magnitude (T34) (phot.mag;em.opt.V)
e_VTmag 0.019 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 0.506 mag Johnson B-V colour (T37) (phot.color;em.opt.B;em.opt.V)
e_B-V 0.022 mag Standard error on B-V (T38) (stat.error;phot.color;em.opt.B)
Q3   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)
Nphoto 48   Number of transits for photometry (T43) (meta.number)
VTscat 0.150 mag Estimate of VTmag scatter (T44) (stat.error)
VTmax 8.25 mag VTmag at maximum (15th percentile) (T45) (phot.mag;em.opt.V)
VTmin 8.60 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_HIPAB  CCDM component identifier (T51) (meta.code.multip)
PPM 69614   [1/789676] PPM and Supplement (Note T52)   (meta.id.cross)
HD 29911   [1/359083] HD cat. III/135 (T53) (meta.id.cross)
BDB+39 1054  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.icrs071.13746077 deg (i) Right Ascension (ICRS, epoch 2000) computed by CDS (pos.eq.ra)
_DE.icrs+39.87546248 deg (i) Declination (ICRS, epoch 2000) computed by CDS (pos.eq.dec)
  
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