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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===3663 2668 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)
_RAJ200000 40 30.4402829 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000+56 32 14.381082 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195000 37 39.3112051 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950+56 15 48.586520 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon121.4162720816 deg Galactic longitude at Epoch=J1991.25, proper motions taken into account (pos.galactic.lon)
_Glat-06.3021670995 deg Galactic latitude at Epoch=J1991.25, proper motions taken into account (pos.galactic.lat)
388958recno 388958  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

TYC3663 2668 1  (i) TYC1-3 (TYC number) (Note T1)   (meta.id;meta.main)
Proxy    [HT] Proximity flag (T2) (meta.code)
RAhms00 40 30.39  Right ascension in h m s, ICRS (J1991.25) (T3) (pos.eq.ra)
DEdms+56 32 14.7  Declination in deg ' ", ICRS (J1991.25) (T4) (pos.eq.dec)
Vmag 2.25 mag Magnitude in Johnson V (T5) (phot.mag;em.opt.V)
r_Vmag    [BDTV] Source of magnitude (Note T7)   (meta.ref;pos.frame)
RAICRS010.12661367 deg (i) alpha, degrees (ICRS, Epoch=J1991.25) (Note T8)   (pos.eq.ra)
DEICRS+56.53740853 deg (i) delta, degrees (ICRS, Epoch=J1991.25) (Note T9)   (pos.eq.dec)
AstroRef    [X] Reference flag for astrometry (Note T10)   (meta.bib)
Plx 10.10 mas Trigonometric parallax (Note T11)   (pos.parallax.trig)
pmRA 50.10 mas/yr Proper motion mu_alpha.cos(delta), ICRS (Note T12)   (pos.pm;pos.eq.ra)
pmDE -33.10 mas/yr Proper motion mu_delta, ICRS (Note T13)   (pos.pm;pos.eq.dec)
e_RAICRS 0.90 mas Standard error in RA*cos(delta) (Note T14)   (stat.error;pos.eq.ra)
e_DEICRS 0.90 mas Standard error in DE (Note T15)   (stat.error;pos.eq.dec)
e_Plx 1.50 mas Standard error in Plx (Note T16)   (stat.error;pos.parallax)
e_pmRA 1.20 mas/yr Standard error in pmRA (Note T17)   (stat.error;pos.pm;pos.eq.ra)
e_pmDE 1.10 mas/yr Standard error in pmDE (Note T18)   (stat.error;pos.pm;pos.eq.dec)
DE:RA-0.26   [-1/1] Correlation, DE/RA*cos(delta) (T19) (stat.correlation)
Plx:RA 0.06   [-1/1] Correlation, Plx/RA*cos(delta) (T20) (stat.correlation)
Plx:DE 0.13   [-1/1] Correlation, Plx/DE (T21) (stat.correlation)
pmRA:RA 0.07   [-1/1] Correlation, pmRA/RA*cos(delta) (T22) (stat.correlation)
pmRA:DE 0.12   [-1/1] Correlation, pmRA/DE (T23) (stat.correlation)
pmRA:Plx-0.15   [-1/1] Correlation, pmRA/Plx (T24) (stat.correlation)
pmDE:RA 0.12   [-1/1] Correlation, pmDE/RA*cos(delta) (T25) (stat.correlation)
pmDE:DE 0.22   [-1/1] Correlation, pmDE/DE (T26) (stat.correlation)
pmDE:Plx 0.22   [-1/1] Correlation, pmDE/Plx (T27) (stat.correlation)
pmDE:pmRA-0.32   [-1/1] Correlation, pmDE/pmRA (T28) (stat.correlation)
Nastro284   Number of transits for astrometry (T29) (meta.number)
F2-0.30   Goodness-of-fit parameter (Note T30)   (stat.fit.goodness)
HIP 3179  (i) Hipparcos HIP number (T31) (meta.id)
BTmag 3.768 mag Mean BT magnitude (T32) (phot.mag;em.opt.B)
e_BTmag 0.002 mag Standard error in BTmag (T33) (stat.error;phot.mag;em.opt.B)
VTmag 2.377 mag Mean VT magnitude (T34) (phot.mag;em.opt.V)
e_VTmag 0.002 mag Standard error in VTmag (T35) (stat.error;phot.mag;em.opt.V)
r_BTmagM   [DMNT] Source of photometry (Note T36)   (meta.ref)
B-V 1.175 mag Johnson B-V colour (T37) (phot.color;em.opt.B;em.opt.V)
e_B-V 0.002 mag Standard error on B-V (T38) (stat.error;phot.color;em.opt.B)
Q1   Astrometric quality flag, Q (Note T40)   (meta.code.qual)
Fs17.2   Signal-to-noise ratio of the star image(T41) (meta.note)
Source    [HPR] Source of astrometric data (Note T42)   (meta.bib)
Nphoto242   Number of transits for photometry (T43) (meta.number)
VTscat 0.022 mag Estimate of VTmag scatter (T44) (stat.error)
VTmax 2.36 mag VTmag at maximum (15th percentile) (T45) (phot.mag;em.opt.V)
VTmin 2.40 mag VTmag at minimum (85th percentile) (T46) (phot.mag;em.opt.V)
VarG   [GN] Known variability from GCVS/NSV (Note T47)   (meta.code;src.var)
VarFlagU   [UVW] Variability from Tycho (Note T48)   (src.var)
MultFlagR   [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 25578   [1/789676] PPM and Supplement (Note T52)   (meta.id.cross)
HD 3712   [1/359083] HD cat. III/135 (T53) (meta.id.cross)
BDB+55 139  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.icrs010.12683451 deg (i) Right Ascension (ICRS, epoch 2000) computed by CDS (pos.eq.ra)
_DE.icrs+56.53732808 deg (i) Declination (ICRS, epoch 2000) computed by CDS (pos.eq.dec)
  
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