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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===3986 365 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)
_RAJ200022 23 07.0097242 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000+55 57 47.602225 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195022 21 14.0399323 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950+55 42 35.727726 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon103.2047913516 deg Galactic longitude at Epoch=J1991.25, proper motions taken into account (pos.galactic.lon)
_Glat-01.1204767067 deg Galactic latitude at Epoch=J1991.25, proper motions taken into account (pos.galactic.lat)
428474recno 428474  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

TYC3986 365 1  (i) TYC1-3 (TYC number) (Note T1)   (meta.id;meta.main)
Proxy    [HT] Proximity flag (T2) (meta.code)
RAhms22 23 07.02  Right ascension in h m s, ICRS (J1991.25) (T3) (pos.eq.ra)
DEdms+55 57 47.6  Declination in deg ' ", ICRS (J1991.25) (T4) (pos.eq.dec)
Vmag 6.50 mag Magnitude in Johnson V (T5) (phot.mag;em.opt.V)
r_Vmag    [BDTV] Source of magnitude (Note T7)   (meta.ref;pos.frame)
RAICRS335.77924670 deg (i) alpha, degrees (ICRS, Epoch=J1991.25) (Note T8)   (pos.eq.ra)
DEICRS+55.96323475 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 -9.10 mas/yr Proper motion mu_alpha.cos(delta), ICRS (Note T12)   (pos.pm;pos.eq.ra)
pmDE -4.90 mas/yr Proper motion mu_delta, ICRS (Note T13)   (pos.pm;pos.eq.dec)
e_RAICRS 3.00 mas Standard error in RA*cos(delta) (Note T14)   (stat.error;pos.eq.ra)
e_DEICRS 3.30 mas Standard error in DE (Note T15)   (stat.error;pos.eq.dec)
e_Plx 3.90 mas Standard error in Plx (Note T16)   (stat.error;pos.parallax)
e_pmRA 3.70 mas/yr Standard error in pmRA (Note T17)   (stat.error;pos.pm;pos.eq.ra)
e_pmDE 4.00 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-0.05   [-1/1] Correlation, Plx/RA*cos(delta) (T20) (stat.correlation)
Plx:DE 0.17   [-1/1] Correlation, Plx/DE (T21) (stat.correlation)
pmRA:RA-0.08   [-1/1] Correlation, pmRA/RA*cos(delta) (T22) (stat.correlation)
pmRA:DE 0.09   [-1/1] Correlation, pmRA/DE (T23) (stat.correlation)
pmRA:Plx-0.04   [-1/1] Correlation, pmRA/Plx (T24) (stat.correlation)
pmDE:RA 0.09   [-1/1] Correlation, pmDE/RA*cos(delta) (T25) (stat.correlation)
pmDE:DE-0.11   [-1/1] Correlation, pmDE/DE (T26) (stat.correlation)
pmDE:Plx 0.27   [-1/1] Correlation, pmDE/Plx (T27) (stat.correlation)
pmDE:pmRA 0.13   [-1/1] Correlation, pmDE/pmRA (T28) (stat.correlation)
Nastro152   Number of transits for astrometry (T29) (meta.number)
F2 1.59   Goodness-of-fit parameter (Note T30)   (stat.fit.goodness)
HIP110504  (i) Hipparcos HIP number (T31) (meta.id)
BTmag 9.452 mag Mean BT magnitude (T32) (phot.mag;em.opt.B)
e_BTmag 0.016 mag Standard error in BTmag (T33) (stat.error;phot.mag;em.opt.B)
VTmag 6.758 mag Mean VT magnitude (T34) (phot.mag;em.opt.V)
e_VTmag 0.005 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 2.258 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)
Q1   Astrometric quality flag, Q (Note T40)   (meta.code.qual)
Fs13.1   Signal-to-noise ratio of the star image(T41) (meta.note)
Source    [HPR] Source of astrometric data (Note T42)   (meta.bib)
Nphoto138   Number of transits for photometry (T43) (meta.number)
VTscat 0.090 mag Estimate of VTmag scatter (T44) (stat.error)
VTmax 6.68 mag VTmag at maximum (15th percentile) (T45) (phot.mag;em.opt.V)
VTmin 6.86 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)
VarFlagV   [UVW] Variability from Tycho (Note T48)   (src.var)
MultFlagY   [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 40586   [1/789676] PPM and Supplement (Note T52)   (meta.id.cross)
HD212466   [1/359083] HD cat. III/135 (T53) (meta.id.cross)
BDB+55 2737  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.icrs335.77920718 deg (i) Right Ascension (ICRS, epoch 2000) computed by CDS (pos.eq.ra)
_DE.icrs+55.96322284 deg (i) Declination (ICRS, epoch 2000) computed by CDS (pos.eq.dec)
  
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