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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===6208 1623 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)
_RAJ200016 05 26.2354748 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000-19 48 19.625526 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195016 02 31.4907315 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950-19 40 12.435147 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon353.1929181381 deg Galactic longitude at Epoch=J1991.25, proper motions taken into account (pos.galactic.lon)
_Glat+23.5996562282 deg Galactic latitude at Epoch=J1991.25, proper motions taken into account (pos.galactic.lat)
640316recno 640316  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

TYC6208 1623 1  (i) TYC1-3 (TYC number) (Note T1)   (meta.id;meta.main)
Proxy    [HT] Proximity flag (T2) (meta.code)
RAhms16 05 26.24  Right ascension in h m s, ICRS (J1991.25) (T3) (pos.eq.ra)
DEdms-19 48 19.4  Declination in deg ' ", ICRS (J1991.25) (T4) (pos.eq.dec)
Vmag 2.62 mag Magnitude in Johnson V (T5) (phot.mag;em.opt.V)
r_Vmag    [BDTV] Source of magnitude (Note T7)   (meta.ref;pos.frame)
RAICRS241.35931422 deg (i) alpha, degrees (ICRS, Epoch=J1991.25) (Note T8)   (pos.eq.ra)
DEICRS-19.80539466 deg (i) delta, degrees (ICRS, Epoch=J1991.25) (Note T9)   (pos.eq.dec)
AstroRefX   [X] Reference flag for astrometry (Note T10)   (meta.bib)
Plx 3.80 mas Trigonometric parallax (Note T11)   (pos.parallax.trig)
pmRA 0.10 mas/yr Proper motion mu_alpha.cos(delta), ICRS (Note T12)   (pos.pm;pos.eq.ra)
pmDE -23.40 mas/yr Proper motion mu_delta, ICRS (Note T13)   (pos.pm;pos.eq.dec)
e_RAICRS 2.10 mas Standard error in RA*cos(delta) (Note T14)   (stat.error;pos.eq.ra)
e_DEICRS 1.40 mas Standard error in DE (Note T15)   (stat.error;pos.eq.dec)
e_Plx 2.40 mas Standard error in Plx (Note T16)   (stat.error;pos.parallax)
e_pmRA 2.80 mas/yr Standard error in pmRA (Note T17)   (stat.error;pos.pm;pos.eq.ra)
e_pmDE 1.80 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-0.25   [-1/1] Correlation, Plx/RA*cos(delta) (T20) (stat.correlation)
Plx:DE-0.22   [-1/1] Correlation, Plx/DE (T21) (stat.correlation)
pmRA:RA-0.17   [-1/1] Correlation, pmRA/RA*cos(delta) (T22) (stat.correlation)
pmRA:DE-0.05   [-1/1] Correlation, pmRA/DE (T23) (stat.correlation)
pmRA:Plx 0.18   [-1/1] Correlation, pmRA/Plx (T24) (stat.correlation)
pmDE:RA 0.02   [-1/1] Correlation, pmDE/RA*cos(delta) (T25) (stat.correlation)
pmDE:DE 0.01   [-1/1] Correlation, pmDE/DE (T26) (stat.correlation)
pmDE:Plx-0.14   [-1/1] Correlation, pmDE/Plx (T27) (stat.correlation)
pmDE:pmRA 0.03   [-1/1] Correlation, pmDE/pmRA (T28) (stat.correlation)
Nastro 76   Number of transits for astrometry (T29) (meta.number)
F2 0.92   Goodness-of-fit parameter (Note T30)   (stat.fit.goodness)
HIP 78820  (i) Hipparcos HIP number (T31) (meta.id)
BTmag 2.528 mag Mean BT magnitude (T32) (phot.mag;em.opt.B)
e_BTmag 0.004 mag Standard error in BTmag (T33) (stat.error;phot.mag;em.opt.B)
VTmag 2.608 mag Mean VT magnitude (T34) (phot.mag;em.opt.V)
e_VTmag 0.004 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-0.072 mag Johnson B-V colour (T37) (phot.color;em.opt.B;em.opt.V)
e_B-V 0.005 mag Standard error on B-V (T38) (stat.error;phot.color;em.opt.B)
Q1   Astrometric quality flag, Q (Note T40)   (meta.code.qual)
Fs 9.9   Signal-to-noise ratio of the star image(T41) (meta.note)
Source    [HPR] Source of astrometric data (Note T42)   (meta.bib)
Nphoto 92   Number of transits for photometry (T43) (meta.number)
VTscat 0.027 mag Estimate of VTmag scatter (T44) (stat.error)
VTmax 2.58 mag VTmag at maximum (15th percentile) (T45) (phot.mag;em.opt.V)
VTmin 2.63 mag VTmag at minimum (85th percentile) (T46) (phot.mag;em.opt.V)
VarN   [GN] Known variability from GCVS/NSV (Note T47)   (meta.code;src.var)
VarFlagU   [UVW] Variability from Tycho (Note T48)   (src.var)
MultFlagS   [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_HIPA  CCDM component identifier (T51) (meta.code.multip)
PPM231174   [1/789676] PPM and Supplement (Note T52)   (meta.id.cross)
HD144217   [1/359083] HD cat. III/135 (T53) (meta.id.cross)
BDB-19 4307  Bonner DM I/119, I/122 (T54) (meta.id.cross)
CoD   Cordoba DM I/114 (T55) (meta.id.cross)
CPDP-19 5945  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.icrs241.35931448 deg (i) Right Ascension (ICRS, epoch 2000) computed by CDS (pos.eq.ra)
_DE.icrs-19.80545154 deg (i) Declination (ICRS, epoch 2000) computed by CDS (pos.eq.dec)
  
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