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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===7830 2310 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)
_RAJ200015 16 37.1461913 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000-42 22 12.563775 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195015 13 17.8183800 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950-42 11 10.071875 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon329.5856175742 deg Galactic longitude at Epoch=J1991.25, proper motions taken into account (pos.galactic.lon)
_Glat+12.8651962260 deg Galactic latitude at Epoch=J1991.25, proper motions taken into account (pos.galactic.lat)
819767recno 819767  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

TYC7830 2310 1  (i) TYC1-3 (TYC number) (Note T1)   (meta.id;meta.main)
Proxy    [HT] Proximity flag (T2) (meta.code)
RAhms15 16 37.17  Right ascension in h m s, ICRS (J1991.25) (T3) (pos.eq.ra)
DEdms-42 22 12.3  Declination in deg ' ", ICRS (J1991.25) (T4) (pos.eq.dec)
Vmag 6.76 mag Magnitude in Johnson V (T5) (phot.mag;em.opt.V)
r_Vmag    [BDTV] Source of magnitude (Note T7)   (meta.ref;pos.frame)
RAICRS229.15486232 deg (i) alpha, degrees (ICRS, Epoch=J1991.25) (Note T8)   (pos.eq.ra;meta.main)
DEICRS-42.37009025 deg (i) delta, degrees (ICRS, Epoch=J1991.25) (Note T9)   (pos.eq.dec;meta.main)
AstroRef    [X] Reference flag for astrometry (Note T10)   (meta.bib)
Plx 6.50 mas Trigonometric parallax (Note T11)   (pos.parallax.trig)
pmRA -26.30 mas/yr Proper motion mu_alpha.cos(delta), ICRS (Note T12)   (pos.pm;pos.eq.ra)
pmDE -27.30 mas/yr Proper motion mu_delta, ICRS (Note T13)   (pos.pm;pos.eq.dec)
e_RAICRS 2.80 mas Standard error in RA*cos(delta) (Note T14)   (stat.error;pos.eq.ra)
e_DEICRS 2.40 mas Standard error in DE (Note T15)   (stat.error;pos.eq.dec)
e_Plx 4.00 mas Standard error in Plx (Note T16)   (stat.error;pos.parallax)
e_pmRA 3.30 mas/yr Standard error in pmRA (Note T17)   (stat.error;pos.pm;pos.eq.ra)
e_pmDE 2.80 mas/yr Standard error in pmDE (Note T18)   (stat.error;pos.pm;pos.eq.dec)
DE:RA-0.20   [-1/1] Correlation, DE/RA*cos(delta) (T19) (stat.correlation)
Plx:RA-0.09   [-1/1] Correlation, Plx/RA*cos(delta) (T20) (stat.correlation)
Plx:DE-0.18   [-1/1] Correlation, Plx/DE (T21) (stat.correlation)
pmRA:RA 0.08   [-1/1] Correlation, pmRA/RA*cos(delta) (T22) (stat.correlation)
pmRA:DE 0.17   [-1/1] Correlation, pmRA/DE (T23) (stat.correlation)
pmRA:Plx-0.31   [-1/1] Correlation, pmRA/Plx (T24) (stat.correlation)
pmDE:RA 0.09   [-1/1] Correlation, pmDE/RA*cos(delta) (T25) (stat.correlation)
pmDE:DE 0.16   [-1/1] Correlation, pmDE/DE (T26) (stat.correlation)
pmDE:Plx 0.09   [-1/1] Correlation, pmDE/Plx (T27) (stat.correlation)
pmDE:pmRA 0.02   [-1/1] Correlation, pmDE/pmRA (T28) (stat.correlation)
Nastro118   Number of transits for astrometry (T29) (meta.number)
F2 0.67   Goodness-of-fit parameter (Note T30)   (stat.fit.goodness)
HIP 74752  (i) Hipparcos HIP number (T31) (meta.id)
BTmag 6.716 mag Mean BT magnitude (T32) (phot.mag;em.opt.B)
e_BTmag 0.004 mag Standard error in BTmag (T33) (stat.error;phot.mag)
VTmag 6.752 mag Mean VT magnitude (T34) (phot.mag;em.opt.V)
e_VTmag 0.006 mag Standard error in VTmag (T35) (stat.error;phot.mag)
r_BTmagM   [DMNT] Source of photometry (Note T36)   (meta.ref)
B-V-0.033 mag Johnson B-V colour (T37) (phot.color;em.opt.B;em.opt.V)
e_B-V 0.006 mag Standard error on B-V (T38) (stat.error;phot.color;em.opt.B)
Q1   Astrometric quality flag, Q (Note T40)   (meta.code.qual)
Fs11.3   Signal-to-noise ratio of the star image(T41) (meta.note)
Source    [HPR] Source of astrometric data (Note T42)   (meta.bib)
Nphoto124   Number of transits for photometry (T43) (meta.number)
VTscat 0.059 mag Estimate of VTmag scatter (T44) (stat.error)
VTmax 6.70 mag VTmag at maximum (15th percentile) (T45) (phot.mag;em.opt.V)
VTmin 6.82 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)
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)
PPM320415   [1/789676] PPM and Supplement (Note T52)   (meta.id.cross)
HD135454   [1/359083] HD cat. III/135 (T53) (meta.id.cross)
BD   Bonner DM I/119, I/122 (T54) (meta.id.cross)
CoDC-41 9693  Cordoba DM I/114 (T55) (meta.id.cross)
CPDP-41 7110  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.icrs229.15477580 deg (i) Right Ascension (ICRS, epoch 2000) computed by CDS (pos.eq.ra)
_DE.icrs-42.37015660 deg (i) Declination (ICRS, epoch 2000) computed by CDS (pos.eq.dec)
  
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