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I/239/tyc_main The Hipparcos and Tycho Catalogues (ESA 1997)
The main part of Tycho Catalogue
timeSerie
(1058332 rows)
  HIP=25878
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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)
512931recno 512931  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

TYC4770 574 1  (i) TYC1-3 (TYC number) (Note T1)   (meta.id;meta.main)
Proxy    [HT] Proximity flag (T2) (meta.code)
RAhms05 31 26.95  Right ascension in h m s, ICRS (J1991.25) (T3) (pos.eq.ra)
DEdms-03 40 19.7  Declination in deg ' ", ICRS (J1991.25) (T4) (pos.eq.dec)
Vmag 7.98 mag Magnitude in Johnson V (T5) (phot.mag;em.opt.V)
r_Vmag    [BDTV] Source of magnitude (Note T7)   (meta.ref;pos.frame)
RAICRS082.86229116 deg (i) alpha, degrees (ICRS, Epoch=J1991.25) (Note T8)   (pos.eq.ra)
DEICRS-03.67213885 deg (i) delta, degrees (ICRS, Epoch=J1991.25) (Note T9)   (pos.eq.dec)
AstroRef    [X] Reference flag for astrometry (Note T10)   (meta.bib)
Plx 156.80 mas Trigonometric parallax (Note T11)   (pos.parallax.trig)
pmRA 743.60 mas/yr Proper motion mu_alpha.cos(delta), ICRS (Note T12)   (pos.pm;pos.eq.ra)
pmDE-2093.40 mas/yr Proper motion mu_delta, ICRS (Note T13)   (pos.pm;pos.eq.dec)
e_RAICRS 7.90 mas Standard error in RA*cos(delta) (Note T14)   (stat.error;pos.eq.ra)
e_DEICRS 6.20 mas Standard error in DE (Note T15)   (stat.error;pos.eq.dec)
e_Plx 9.40 mas Standard error in Plx (Note T16)   (stat.error;pos.parallax)
e_pmRA 8.20 mas/yr Standard error in pmRA (Note T17)   (stat.error;pos.pm;pos.eq.ra)
e_pmDE 6.50 mas/yr Standard error in pmDE (Note T18)   (stat.error;pos.pm;pos.eq.dec)
DE:RA 0.02   [-1/1] Correlation, DE/RA*cos(delta) (T19) (stat.correlation)
Plx:RA 0.31   [-1/1] Correlation, Plx/RA*cos(delta) (T20) (stat.correlation)
Plx:DE-0.20   [-1/1] Correlation, Plx/DE (T21) (stat.correlation)
pmRA:RA-0.16   [-1/1] Correlation, pmRA/RA*cos(delta) (T22) (stat.correlation)
pmRA:DE-0.06   [-1/1] Correlation, pmRA/DE (T23) (stat.correlation)
pmRA:Plx-0.04   [-1/1] Correlation, pmRA/Plx (T24) (stat.correlation)
pmDE:RA-0.12   [-1/1] Correlation, pmDE/RA*cos(delta) (T25) (stat.correlation)
pmDE:DE-0.09   [-1/1] Correlation, pmDE/DE (T26) (stat.correlation)
pmDE:Plx-0.21   [-1/1] Correlation, pmDE/Plx (T27) (stat.correlation)
pmDE:pmRA 0.14   [-1/1] Correlation, pmDE/pmRA (T28) (stat.correlation)
Nastro108   Number of transits for astrometry (T29) (meta.number)
F2 1.77   Goodness-of-fit parameter (Note T30)   (stat.fit.goodness)
HIP 25878  (i) Hipparcos HIP number (T31) (meta.id)
BTmag 9.844 mag Mean BT magnitude (T32) (phot.mag;em.opt.B)
e_BTmag 0.024 mag Standard error in BTmag (T33) (stat.error;phot.mag;em.opt.B)
VTmag 8.144 mag Mean VT magnitude (T34) (phot.mag;em.opt.V)
e_VTmag 0.011 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 1.419 mag Johnson B-V colour (T37) (phot.color;em.opt.B;em.opt.V)
e_B-V 0.021 mag Standard error on B-V (T38) (stat.error;phot.color;em.opt.B)
Q2   Astrometric quality flag, Q (Note T40)   (meta.code.qual)
Fs10.4   Signal-to-noise ratio of the star image(T41) (meta.note)
Source    [HPR] Source of astrometric data (Note T42)   (meta.bib)
Nphoto 96   Number of transits for photometry (T43) (meta.number)
VTscat 0.104 mag Estimate of VTmag scatter (T44) (stat.error)
VTmax 8.04 mag VTmag at maximum (15th percentile) (T45) (phot.mag;em.opt.V)
VTmin 8.25 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)
VarFlag    [UVW] Variability from Tycho (Note T48)   (src.var)
MultFlagZ   [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)
PPM188143   [1/789676] PPM and Supplement (Note T52)   (meta.id.cross)
HD 36395   [1/359083] HD cat. III/135 (T53) (meta.id.cross)
BDB-03 1123  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.icrs082.86410225 deg (i) Right Ascension (ICRS, epoch 2000) computed by CDS (pos.eq.ra)
_DE.icrs-03.67722697 deg (i) Declination (ICRS, epoch 2000) computed by CDS (pos.eq.dec)
  
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