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I/259/tyc2 The Tycho-2 Catalogue (Hog+ 2000)
*The Tycho-2 main catalogue (2539913 rows)
  recno=1255908
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ColumnValue  Explain   (UCD)
_RAJ200007 44 18.0096066 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000-04 04 35.703912 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195007 41 48.4781285 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950-03 57 20.808360 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon222.7044183338 deg Galactic longitude (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.galactic.lon)
_Glat 9.8188834578 deg Galactic latitude (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.galactic.lat)
1255908recno 1255908  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

TYC14839  (i) [1,9537] TYC1 from TYC or GSC (Note 1)   (meta.id.part;meta.main)
TYC2 1304  (i) [1,12121] TYC2 from TYC or GSC (Note 1)   (meta.id.part;meta.main)
TYC31  (i) [1,3] TYC3 from TYC (Note 1)   (meta.id.part;meta.main)
pflag    [ PX] mean position flag (Note 2)   (meta.code)
RAmdeg116.07504053 deg (i) []? Mean Right Asc, ICRS, epoch=J2000 (3) (Note 3)   (pos.eq.ra;meta.main)
DEmdeg -4.07658444 deg (i) []? Mean Decl, ICRS, at epoch=J2000 (3) (Note 3)   (pos.eq.dec;meta.main)
pmRA 5.8 mas/yr [-4418.0,6544.2] prop. mot. in RA*cos(dec) (Note)   (pos.pm;pos.eq.ra)
pmDE 14.4 mas/yr [-5774.3,10277.3] prop. mot. in Dec (Note)   (pos.pm;pos.eq.dec)
e_RAmdeg 32 mas [3,183] s.e. RA*cos(dec),at mean epoch (Note 5)   (stat.error)
e_DEmdeg 34 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 2.0 mas/yr [0.2,10.3] s.e. of proper motion in Dec (Note 5)   (stat.error)
EpRAm1988.39 yr [1915.95,1992.53] mean epoch of RA (Note 4)   (time.epoch)
EpDEm1988.36 yr [1911.94,1992.01] mean epoch of Dec (Note 4)   (time.epoch)
Num 3   [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 0.8   [0.0,9.9] Goodness of fit for mean Dec (Note 6)   (meta.code.qual)
q_pmRA 1.2   [0.0,9.9] Goodness of fit for pmRA (Note 6)   (meta.code.qual)
q_pmDE 0.8   [0.0,9.9] Goodness of fit for pmDE (Note 6)   (meta.code.qual)
BTmag10.448 mag [2.183,16.581] Tycho-2 BT magnitude (Note 7)   (phot.mag;em.opt.B)
e_BTmag 0.054 mag [0.014,1.977] s.e. of BT (Note 7)   (stat.error)
VTmag10.064 mag [1.905,15.193] Tycho-2 VT magnitude (Note 7)   (phot.mag;em.opt.V)
e_VTmag 0.053 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)
HIP    [1,120404] Hipparcos number (meta.id)
CCDM   CCDM component identifier for HIP stars (Note 10)   (meta.code.multip)
RA(ICRS)116.07502667 deg (i) Observed Tycho-2 Right Ascension, ICRS (pos.eq.ra;meta.main)
DE(ICRS) -4.07661750 deg (i) Observed Tycho-2 Declination, ICRS (pos.eq.dec;meta.main)
EpRA-1990 1.73 yr [0.81,2.13] epoch-1990 of RAdeg (time.epoch)
EpDE-1990 1.71 yr [0.72,2.36] epoch-1990 of DEdeg (time.epoch)
e_RAdeg 32.9 mas s.e.RA*cos(dec), of observed Tycho-2 RA (Note 5)   (stat.error)
e_DEdeg 34.9 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 0.0   [-1,1] correlation (RAdeg,DEdeg) (stat.correlation)
  
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