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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===8364 33 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)
_RAJ200018 33 49.2673720 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000-47 06 49.619135 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195018 30 04.4630366 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950-47 09 09.857341 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon348.0421210431 deg Galactic longitude at Epoch=J1991.25, proper motions taken into account (pos.galactic.lon)
_Glat-16.7139423815 deg Galactic latitude at Epoch=J1991.25, proper motions taken into account (pos.galactic.lat)
894355recno 894355  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

TYC8364 33 1  (i) TYC1-3 (TYC number) (Note T1)   (meta.id;meta.main)
Proxy    [HT] Proximity flag (T2) (meta.code)
RAhms18 33 49.32  Right ascension in h m s, ICRS (J1991.25) (T3) (pos.eq.ra)
DEdms-47 06 49.8  Declination in deg ' ", ICRS (J1991.25) (T4) (pos.eq.dec)
Vmag10.49 mag Magnitude in Johnson V (T5) (phot.mag;em.opt.V)
r_Vmag    [BDTV] Source of magnitude (Note T7)   (meta.ref;pos.frame)
RAICRS278.45548322 deg (i) alpha, degrees (ICRS, Epoch=J1991.25) (Note T8)   (pos.eq.ra)
DEICRS-47.11382976 deg (i) delta, degrees (ICRS, Epoch=J1991.25) (Note T9)   (pos.eq.dec)
AstroRefX   [X] Reference flag for astrometry (Note T10)   (meta.bib)
Plx -32.80 mas Trigonometric parallax (Note T11)   (pos.parallax.trig)
pmRA -56.70 mas/yr Proper motion mu_alpha.cos(delta), ICRS (Note T12)   (pos.pm;pos.eq.ra)
pmDE 19.20 mas/yr Proper motion mu_delta, ICRS (Note T13)   (pos.pm;pos.eq.dec)
e_RAICRS 46.30 mas Standard error in RA*cos(delta) (Note T14)   (stat.error;pos.eq.ra)
e_DEICRS 35.90 mas Standard error in DE (Note T15)   (stat.error;pos.eq.dec)
e_Plx 53.10 mas Standard error in Plx (Note T16)   (stat.error;pos.parallax)
e_pmRA 60.80 mas/yr Standard error in pmRA (Note T17)   (stat.error;pos.pm;pos.eq.ra)
e_pmDE 57.30 mas/yr Standard error in pmDE (Note T18)   (stat.error;pos.pm;pos.eq.dec)
DE:RA 0.01   [-1/1] Correlation, DE/RA*cos(delta) (T19) (stat.correlation)
Plx:RA-0.38   [-1/1] Correlation, Plx/RA*cos(delta) (T20) (stat.correlation)
Plx:DE 0.03   [-1/1] Correlation, Plx/DE (T21) (stat.correlation)
pmRA:RA 0.02   [-1/1] Correlation, pmRA/RA*cos(delta) (T22) (stat.correlation)
pmRA:DE-0.04   [-1/1] Correlation, pmRA/DE (T23) (stat.correlation)
pmRA:Plx 0.03   [-1/1] Correlation, pmRA/Plx (T24) (stat.correlation)
pmDE:RA-0.05   [-1/1] Correlation, pmDE/RA*cos(delta) (T25) (stat.correlation)
pmDE:DE-0.18   [-1/1] Correlation, pmDE/DE (T26) (stat.correlation)
pmDE:Plx 0.06   [-1/1] Correlation, pmDE/Plx (T27) (stat.correlation)
pmDE:pmRA 0.07   [-1/1] Correlation, pmDE/pmRA (T28) (stat.correlation)
Nastro 72   Number of transits for astrometry (T29) (meta.number)
F2 0.20   Goodness-of-fit parameter (Note T30)   (stat.fit.goodness)
HIP   (i) Hipparcos HIP number (T31) (meta.id)
BTmag11.993 mag Mean BT magnitude (T32) (phot.mag;em.opt.B)
e_BTmag 0.189 mag Standard error in BTmag (T33) (stat.error;phot.mag;em.opt.B)
VTmag10.622 mag Mean VT magnitude (T34) (phot.mag;em.opt.V)
e_VTmag 0.085 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 1.158 mag Johnson B-V colour (T37) (phot.color;em.opt.B;em.opt.V)
e_B-V 0.192 mag Standard error on B-V (T38) (stat.error;phot.color;em.opt.B)
Q7   Astrometric quality flag, Q (Note T40)   (meta.code.qual)
Fs 4.1   Signal-to-noise ratio of the star image(T41) (meta.note)
Source    [HPR] Source of astrometric data (Note T42)   (meta.bib)
Nphoto 84   Number of transits for photometry (T43) (meta.number)
VTscat 0.574 mag Estimate of VTmag scatter (T44) (stat.error)
VTmax10.02 mag VTmag at maximum (15th percentile) (T45) (phot.mag;em.opt.V)
VTmin12.07 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)
morePhoto   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    [1/789676] PPM and Supplement (Note T52)   (meta.id.cross)
HD    [1/359083] HD cat. III/135 (T53) (meta.id.cross)
BD   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.icrs278.45528072 deg (i) Right Ascension (ICRS, epoch 2000) computed by CDS (pos.eq.ra)
_DE.icrs-47.11378309 deg (i) Declination (ICRS, epoch 2000) computed by CDS (pos.eq.dec)
  
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