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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===3844 479 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)
_RAJ200012 41 44.5205792 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000+55 43 28.798267 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195012 39 27.4075575 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950+55 59 55.486167 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon125.7800471505 deg Galactic longitude at Epoch=J1991.25, proper motions taken into account (pos.galactic.lon)
_Glat+61.3499022308 deg Galactic latitude at Epoch=J1991.25, proper motions taken into account (pos.galactic.lat)
410717recno 410717  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

TYC3844 479 1  (i) TYC1-3 (TYC number) (Note T1)   (meta.id;meta.main)
Proxy    [HT] Proximity flag (T2) (meta.code)
RAhms12 41 44.39  Right ascension in h m s, ICRS (J1991.25) (T3) (pos.eq.ra)
DEdms+55 43 28.9  Declination in deg ' ", ICRS (J1991.25) (T4) (pos.eq.dec)
Vmag 8.28 mag Magnitude in Johnson V (T5) (phot.mag;em.opt.V)
r_Vmag    [BDTV] Source of magnitude (Note T7)   (meta.ref;pos.frame)
RAICRS190.43497847 deg (i) alpha, degrees (ICRS, Epoch=J1991.25) (Note T8)   (pos.eq.ra)
DEICRS+55.72468636 deg (i) delta, degrees (ICRS, Epoch=J1991.25) (Note T9)   (pos.eq.dec)
AstroRef    [X] Reference flag for astrometry (Note T10)   (meta.bib)
Plx 32.40 mas Trigonometric parallax (Note T11)   (pos.parallax.trig)
pmRA 121.40 mas/yr Proper motion mu_alpha.cos(delta), ICRS (Note T12)   (pos.pm;pos.eq.ra)
pmDE -8.30 mas/yr Proper motion mu_delta, ICRS (Note T13)   (pos.pm;pos.eq.dec)
e_RAICRS 5.20 mas Standard error in RA*cos(delta) (Note T14)   (stat.error;pos.eq.ra)
e_DEICRS 5.20 mas Standard error in DE (Note T15)   (stat.error;pos.eq.dec)
e_Plx 6.70 mas Standard error in Plx (Note T16)   (stat.error;pos.parallax)
e_pmRA 6.00 mas/yr Standard error in pmRA (Note T17)   (stat.error;pos.pm;pos.eq.ra)
e_pmDE 5.80 mas/yr Standard error in pmDE (Note T18)   (stat.error;pos.pm;pos.eq.dec)
DE:RA 0.09   [-1/1] Correlation, DE/RA*cos(delta) (T19) (stat.correlation)
Plx:RA-0.07   [-1/1] Correlation, Plx/RA*cos(delta) (T20) (stat.correlation)
Plx:DE-0.11   [-1/1] Correlation, Plx/DE (T21) (stat.correlation)
pmRA:RA 0.01   [-1/1] Correlation, pmRA/RA*cos(delta) (T22) (stat.correlation)
pmRA:DE-0.08   [-1/1] Correlation, pmRA/DE (T23) (stat.correlation)
pmRA:Plx-0.02   [-1/1] Correlation, pmRA/Plx (T24) (stat.correlation)
pmDE:RA-0.09   [-1/1] Correlation, pmDE/RA*cos(delta) (T25) (stat.correlation)
pmDE:DE-0.09   [-1/1] Correlation, pmDE/DE (T26) (stat.correlation)
pmDE:Plx 0.14   [-1/1] Correlation, pmDE/Plx (T27) (stat.correlation)
pmDE:pmRA 0.06   [-1/1] Correlation, pmDE/pmRA (T28) (stat.correlation)
Nastro201   Number of transits for astrometry (T29) (meta.number)
F2 2.58   Goodness-of-fit parameter (Note T30)   (stat.fit.goodness)
HIP 61946  (i) Hipparcos HIP number (T31) (meta.id)
BTmag 9.519 mag Mean BT magnitude (T32) (phot.mag;em.opt.B)
e_BTmag 0.015 mag Standard error in BTmag (T33) (stat.error;phot.mag;em.opt.B)
VTmag 8.383 mag Mean VT magnitude (T34) (phot.mag;em.opt.V)
e_VTmag 0.010 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 0.974 mag Johnson B-V colour (T37) (phot.color;em.opt.B;em.opt.V)
e_B-V 0.014 mag Standard error on B-V (T38) (stat.error;phot.color;em.opt.B)
Q2   Astrometric quality flag, Q (Note T40)   (meta.code.qual)
Fs14.3   Signal-to-noise ratio of the star image(T41) (meta.note)
Source    [HPR] Source of astrometric data (Note T42)   (meta.bib)
Nphoto164   Number of transits for photometry (T43) (meta.number)
VTscat 0.121 mag Estimate of VTmag scatter (T44) (stat.error)
VTmax 8.25 mag VTmag at maximum (15th percentile) (T45) (phot.mag;em.opt.V)
VTmin 8.50 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)
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 33682   [1/789676] PPM and Supplement (Note T52)   (meta.id.cross)
HD110463   [1/359083] HD cat. III/135 (T53) (meta.id.cross)
BDB+56 1618  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.icrs190.43550241 deg (i) Right Ascension (ICRS, epoch 2000) computed by CDS (pos.eq.ra)
_DE.icrs+55.72466619 deg (i) Declination (ICRS, epoch 2000) computed by CDS (pos.eq.dec)
  
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