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I/259/tyc2 The Tycho-2 Catalogue (Hog+ 2000)
*The Tycho-2 main catalogue (2539913 rows)
  recno=938407
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ColumnValue  Explain   (UCD)
_RAJ200023 26 57.366 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (computed by VizieR, not part of the original data) (pos.eq.ra)
_DEJ2000+49 30 58.98 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (computed by VizieR, not part of the original data) (pos.eq.dec)
_RAB195023 24 35.189 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (computed by VizieR, not part of the original data) (pos.eq.ra)
_DEB1950+49 14 28.16 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (computed by VizieR, not part of the original data) (pos.eq.dec)
_Glon109.1409 deg Galactic longitude (computed by VizieR, not part of the original data) (pos.galactic.lon)
_Glat-11.0798 deg Galactic latitude (computed by VizieR, not part of the original data) (pos.galactic.lat)
938407recno 938407  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

TYC13645   [1,9537] TYC1 from TYC or GSC (Note 1)   (meta.id.part;meta.main)
TYC2 2304   [1,12121] TYC2 from TYC or GSC (Note 1)   (meta.id.part;meta.main)
TYC31   [1,3] TYC3 from TYC (Note 1)   (meta.id.part;meta.main)
pflag    [ PX] mean position flag (Note 2)   (meta.code)
RAmdeg351.73902296 deg []? Mean Right Asc, ICRS, epoch=J2000 (3) (Note 3)   (pos.eq.ra;meta.main)
DEmdeg 49.51638207 deg []? Mean Decl, ICRS, at epoch=J2000 (3) (Note 3)   (pos.eq.dec;meta.main)
pmRA -0.7 mas/yr [-4418.0,6544.2] prop. mot. in RA*cos(dec) (Note)   (pos.pm;pos.eq.ra)
pmDE -1.0 mas/yr [-5774.3,10277.3] prop. mot. in Dec (Note)   (pos.pm;pos.eq.dec)
e_RAmdeg 13 mas [3,183] s.e. RA*cos(dec),at mean epoch (Note 5)   (stat.error)
e_DEmdeg 12 mas [1,184] s.e. of Dec at mean epoch (Note 5)   (stat.error)
e_pmRA 1.9 mas/yr [0.2,11.5] s.e. prop mot in RA*cos(dec) (Note 5)   (stat.error)
e_pmDE 1.8 mas/yr [0.2,10.3] s.e. of proper motion in Dec (Note 5)   (stat.error)
EpRAm1990.16 yr [1915.95,1992.53] mean epoch of RA (Note 4)   (time.epoch)
EpDEm1990.83 yr [1911.94,1992.01] mean epoch of Dec (Note 4)   (time.epoch)
Num 7   [2,36] Number of positions used (meta.id)
q_RAmdeg 1.2   [0.0,9.9] Goodness of fit for mean RA (Note 6)   (meta.code.qual)
q_DEmdeg 1.0   [0.0,9.9] Goodness of fit for mean Dec (Note 6)   (meta.code.qual)
q_pmRA 1.1   [0.0,9.9] Goodness of fit for pmRA (Note 6)   (meta.code.qual)
q_pmDE 1.1   [0.0,9.9] Goodness of fit for pmDE (Note 6)   (meta.code.qual)
BTmag13.381 mag [2.183,16.581] Tycho-2 BT magnitude (Note 7)   (phot.mag;em.opt.B)
e_BTmag 0.247 mag [0.014,1.977] s.e. of BT (Note 7)   (stat.error)
VTmag 9.459 mag [1.905,15.193] Tycho-2 VT magnitude (Note 7)   (phot.mag;em.opt.V)
e_VTmag 0.016 mag [0.009,1.468] s.e. of VT (Note 7)   (stat.error)
prox999   [3,999] proximity indicator (Note 8)   (meta.code)
TYCT   [T] Tycho-1 star (Note 9)   (meta.code)
HIP115743   [1,120404] Hipparcos number (meta.id)
CCDM   CCDM component identifier for HIP stars (Note 10)   (meta.code.multip)
RA(ICRS)351.73902583 deg Observed Tycho-2 Right Ascension, ICRS (pos.eq.ra;meta.main)
DE(ICRS) 49.51638472 deg Observed Tycho-2 Declination, ICRS (pos.eq.dec;meta.main)
EpRA-1990 1.61 yr [0.81,2.13] epoch-1990 of RAdeg (time.epoch)
EpDE-1990 1.67 yr [0.72,2.36] epoch-1990 of DEdeg (time.epoch)
e_RAdeg 14.2 mas s.e.RA*cos(dec), of observed Tycho-2 RA (Note 5)   (stat.error)
e_DEdeg 12.4 mas s.e. of observed Tycho-2 Dec (Note 5)   (stat.error)
posflg    [ DP] type of Tycho-2 solution (Note 11)   (meta.id;stat.fit)
corr 0.2   [-1,1] correlation (RAdeg,DEdeg) (stat.correlation)
  
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