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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===1800 1935 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)
_RAJ200003 47 10.0537867 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000+24 16 35.381567 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195003 44 11.2349658 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950+24 07 26.431667 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon166.4840305386 deg Galactic longitude at Epoch=J1991.25, proper motions taken into account (pos.galactic.lon)
_Glat-23.3770535910 deg Galactic latitude at Epoch=J1991.25, proper motions taken into account (pos.galactic.lat)
161955recno 161955  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

TYC1800 1935 1  (i) TYC1-3 (TYC number) (Note T1)   (meta.id;meta.main)
Proxy    [HT] Proximity flag (T2) (meta.code)
RAhms03 47 10.04  Right ascension in h m s, ICRS (J1991.25) (T3) (pos.eq.ra)
DEdms+24 16 36.3  Declination in deg ' ", ICRS (J1991.25) (T4) (pos.eq.dec)
Vmag 9.58 mag Magnitude in Johnson V (T5) (phot.mag;em.opt.V)
r_Vmag    [BDTV] Source of magnitude (Note T7)   (meta.ref;pos.frame)
RAICRS056.79184785 deg (i) alpha, degrees (ICRS, Epoch=J1991.25) (Note T8)   (pos.eq.ra)
DEICRS+24.27675422 deg (i) delta, degrees (ICRS, Epoch=J1991.25) (Note T9)   (pos.eq.dec)
AstroRef    [X] Reference flag for astrometry (Note T10)   (meta.bib)
Plx -2.80 mas Trigonometric parallax (Note T11)   (pos.parallax.trig)
pmRA 16.10 mas/yr Proper motion mu_alpha.cos(delta), ICRS (Note T12)   (pos.pm;pos.eq.ra)
pmDE -106.70 mas/yr Proper motion mu_delta, ICRS (Note T13)   (pos.pm;pos.eq.dec)
e_RAICRS 32.30 mas Standard error in RA*cos(delta) (Note T14)   (stat.error;pos.eq.ra)
e_DEICRS 19.00 mas Standard error in DE (Note T15)   (stat.error;pos.eq.dec)
e_Plx 37.70 mas Standard error in Plx (Note T16)   (stat.error;pos.parallax)
e_pmRA 28.40 mas/yr Standard error in pmRA (Note T17)   (stat.error;pos.pm;pos.eq.ra)
e_pmDE 21.90 mas/yr Standard error in pmDE (Note T18)   (stat.error;pos.pm;pos.eq.dec)
DE:RA 0.36   [-1/1] Correlation, DE/RA*cos(delta) (T19) (stat.correlation)
Plx:RA 0.61   [-1/1] Correlation, Plx/RA*cos(delta) (T20) (stat.correlation)
Plx:DE 0.14   [-1/1] Correlation, Plx/DE (T21) (stat.correlation)
pmRA:RA 0.15   [-1/1] Correlation, pmRA/RA*cos(delta) (T22) (stat.correlation)
pmRA:DE 0.11   [-1/1] Correlation, pmRA/DE (T23) (stat.correlation)
pmRA:Plx-0.04   [-1/1] Correlation, pmRA/Plx (T24) (stat.correlation)
pmDE:RA 0.13   [-1/1] Correlation, pmDE/RA*cos(delta) (T25) (stat.correlation)
pmDE:DE 0.05   [-1/1] Correlation, pmDE/DE (T26) (stat.correlation)
pmDE:Plx 0.08   [-1/1] Correlation, pmDE/Plx (T27) (stat.correlation)
pmDE:pmRA 0.23   [-1/1] Correlation, pmDE/pmRA (T28) (stat.correlation)
Nastro 62   Number of transits for astrometry (T29) (meta.number)
F2 0.81   Goodness-of-fit parameter (Note T30)   (stat.fit.goodness)
HIP   (i) Hipparcos HIP number (T31) (meta.id)
BTmag10.107 mag Mean BT magnitude (T32) (phot.mag;em.opt.B)
e_BTmag 0.063 mag Standard error in BTmag (T33) (stat.error;phot.mag;em.opt.B)
VTmag 9.627 mag Mean VT magnitude (T34) (phot.mag;em.opt.V)
e_VTmag 0.059 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 0.452 mag Johnson B-V colour (T37) (phot.color;em.opt.B;em.opt.V)
e_B-V 0.086 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 7.7   Signal-to-noise ratio of the star image(T41) (meta.note)
Source    [HPR] Source of astrometric data (Note T42)   (meta.bib)
Nphoto 25   Number of transits for photometry (T43) (meta.number)
VTscat 0.307 mag Estimate of VTmag scatter (T44) (stat.error)
VTmax 9.33 mag VTmag at maximum (15th percentile) (T45) (phot.mag;em.opt.V)
VTmin10.30 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)
PPM 92881   [1/789676] PPM and Supplement (Note T52)   (meta.id.cross)
HD 23584   [1/359083] HD cat. III/135 (T53) (meta.id.cross)
BDB+23 529  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.icrs056.79189078 deg (i) Right Ascension (ICRS, epoch 2000) computed by CDS (pos.eq.ra)
_DE.icrs+24.27649488 deg (i) Declination (ICRS, epoch 2000) computed by CDS (pos.eq.dec)
  
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