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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===2867 1318 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)
_RAJ200003 48 00.3757339 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000+40 31 50.282220 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195003 44 38.8343782 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950+40 22 37.405663 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon155.5516071631 deg Galactic longitude at Epoch=J1991.25, proper motions taken into account (pos.galactic.lon)
_Glat-10.9005405239 deg Galactic latitude at Epoch=J1991.25, proper motions taken into account (pos.galactic.lat)
279477recno 279477  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

TYC2867 1318 1  (i) TYC1-3 (TYC number) (Note T1)   (meta.id;meta.main)
Proxy    [HT] Proximity flag (T2) (meta.code)
RAhms03 48 00.33  Right ascension in h m s, ICRS (J1991.25) (T3) (pos.eq.ra)
DEdms+40 31 50.1  Declination in deg ' ", ICRS (J1991.25) (T4) (pos.eq.dec)
Vmag 7.24 mag Magnitude in Johnson V (T5) (phot.mag;em.opt.V)
r_Vmag    [BDTV] Source of magnitude (Note T7)   (meta.ref;pos.frame)
RAICRS057.00138392 deg (i) alpha, degrees (ICRS, Epoch=J1991.25) (Note T8)   (pos.eq.ra)
DEICRS+40.53058461 deg (i) delta, degrees (ICRS, Epoch=J1991.25) (Note T9)   (pos.eq.dec)
AstroRef    [X] Reference flag for astrometry (Note T10)   (meta.bib)
Plx 17.00 mas Trigonometric parallax (Note T11)   (pos.parallax.trig)
pmRA 56.80 mas/yr Proper motion mu_alpha.cos(delta), ICRS (Note T12)   (pos.pm;pos.eq.ra)
pmDE 20.30 mas/yr Proper motion mu_delta, ICRS (Note T13)   (pos.pm;pos.eq.dec)
e_RAICRS 3.90 mas Standard error in RA*cos(delta) (Note T14)   (stat.error;pos.eq.ra)
e_DEICRS 2.90 mas Standard error in DE (Note T15)   (stat.error;pos.eq.dec)
e_Plx 4.70 mas Standard error in Plx (Note T16)   (stat.error;pos.parallax)
e_pmRA 4.40 mas/yr Standard error in pmRA (Note T17)   (stat.error;pos.pm;pos.eq.ra)
e_pmDE 4.10 mas/yr Standard error in pmDE (Note T18)   (stat.error;pos.pm;pos.eq.dec)
DE:RA 0.09   [-1/1] Correlation, DE/RA*cos(delta) (T19) (stat.correlation)
Plx:RA 0.19   [-1/1] Correlation, Plx/RA*cos(delta) (T20) (stat.correlation)
Plx:DE-0.17   [-1/1] Correlation, Plx/DE (T21) (stat.correlation)
pmRA:RA-0.05   [-1/1] Correlation, pmRA/RA*cos(delta) (T22) (stat.correlation)
pmRA:DE-0.12   [-1/1] Correlation, pmRA/DE (T23) (stat.correlation)
pmRA:Plx 0.13   [-1/1] Correlation, pmRA/Plx (T24) (stat.correlation)
pmDE:RA-0.17   [-1/1] Correlation, pmDE/RA*cos(delta) (T25) (stat.correlation)
pmDE:DE 0.12   [-1/1] Correlation, pmDE/DE (T26) (stat.correlation)
pmDE:Plx-0.09   [-1/1] Correlation, pmDE/Plx (T27) (stat.correlation)
pmDE:pmRA 0.23   [-1/1] Correlation, pmDE/pmRA (T28) (stat.correlation)
Nastro135   Number of transits for astrometry (T29) (meta.number)
F2 0.70   Goodness-of-fit parameter (Note T30)   (stat.fit.goodness)
HIP 17747  (i) Hipparcos HIP number (T31) (meta.id)
BTmag 7.991 mag Mean BT magnitude (T32) (phot.mag;em.opt.B)
e_BTmag 0.008 mag Standard error in BTmag (T33) (stat.error;phot.mag;em.opt.B)
VTmag 7.305 mag Mean VT magnitude (T34) (phot.mag;em.opt.V)
e_VTmag 0.008 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 0.618 mag Johnson B-V colour (T37) (phot.color;em.opt.B;em.opt.V)
e_B-V 0.009 mag Standard error on B-V (T38) (stat.error;phot.color;em.opt.B)
Q1   Astrometric quality flag, Q (Note T40)   (meta.code.qual)
Fs11.7   Signal-to-noise ratio of the star image(T41) (meta.note)
Source    [HPR] Source of astrometric data (Note T42)   (meta.bib)
Nphoto121   Number of transits for photometry (T43) (meta.number)
VTscat 0.076 mag Estimate of VTmag scatter (T44) (stat.error)
VTmax 7.24 mag VTmag at maximum (15th percentile) (T45) (phot.mag;em.opt.V)
VTmin 7.39 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)
morePhotoB  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 46527   [1/789676] PPM and Supplement (Note T52)   (meta.id.cross)
HD 23596   [1/359083] HD cat. III/135 (T53) (meta.id.cross)
BDB+40 835  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.icrs057.00156556 deg (i) Right Ascension (ICRS, epoch 2000) computed by CDS (pos.eq.ra)
_DE.icrs+40.53063395 deg (i) Declination (ICRS, epoch 2000) computed by CDS (pos.eq.dec)
  
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