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I/259
 The Tycho-2 Catalogue (Hog+ 2000)
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1.I/259/tyc2(c)*The Tycho-2 main catalogue (Note) (2539913 rows)
2.I/259/suppl_1(c)The Tycho-2 supplement-1 (17588 rows)
3.I/259/suppl_2(c)The Tycho-2 supplement-2 (1146 rows)
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Query by Constraints constraints help applied on Columns Output Order: + - )
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Column  Constraint Explain   (UCD)
  (ALL)recno  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)
   (ALL)TYC1   [1,9537] TYC1 from TYC or GSC (Note 1)   (meta.id.part;meta.main)
   (ALL)TYC2   [1,12121] TYC2 from TYC or GSC (Note 1)   (meta.id.part;meta.main)
   (ALL)TYC3   [1,3] TYC3 from TYC (Note 1)   (meta.id.part;meta.main)
  (1)pflag (char) [ PX] mean position flag (Note 2)   (meta.code)
  (1)RAmdeg deg (n) []? Mean Right Asc, ICRS, epoch=J2000 (3) (Note 3)   (pos.eq.ra;meta.main)
  (1)DEmdeg deg (n) []? Mean Decl, ICRS, at epoch=J2000 (3) (Note 3)   (pos.eq.dec;meta.main)
   (ALL)pmRA mas/yr (n) [-4418.0,6544.2] prop. mot. in RA*cos(dec) (Note)   (pos.pm;pos.eq.ra)
   (ALL)pmDE mas/yr (n) [-5774.3,10277.3] prop. mot. in Dec (Note)   (pos.pm;pos.eq.dec)
  (1)e_RAmdeg mas (n) [3,183] s.e. RA*cos(dec),at mean epoch (Note 5)   (stat.error)
  (1)e_DEmdeg mas (n) [1,184] s.e. of Dec at mean epoch (Note 5)   (stat.error)

ALL cols
    
(n) indicates a possible blank or NULL column  
   (ALH)e_pmRA mas/yr (n) [0.2,11.5] s.e. prop mot in RA*cos(dec) (Note 5)   (stat.error)
   (ALL)e_pmDE mas/yr (n) [0.2,10.3] s.e. of proper motion in Dec (Note 5)   (stat.error)
  (1)EpRAm yr (n) [1915.95,1992.53] mean epoch of RA (Note 4)   (time.epoch)
  (1)EpDEm yr (n) [1911.94,1992.01] mean epoch of Dec (Note 4)   (time.epoch)
  (1)Num  (n) [2,36] Number of positions used (meta.id)
  (1)q_RAmdeg  (n) [0.0,9.9] Goodness of fit for mean RA (Note 6)   (meta.code.qual)
  (1)q_DEmdeg  (n) [0.0,9.9] Goodness of fit for mean Dec (Note 6)   (meta.code.qual)
  (1)q_pmRA  (n) [0.0,9.9] Goodness of fit for pmRA (Note 6)   (meta.code.qual)
  (1)q_pmDE  (n) [0.0,9.9] Goodness of fit for pmDE (Note 6)   (meta.code.qual)
   (ALL)BTmag mag (n) [2.183,16.581] Tycho-2 BT magnitude (Note 7)   (phot.mag;em.opt.B)
   (ALL)e_BTmag mag (n) [0.014,1.977] s.e. of BT (Note 7)   (stat.error)
   (ALL)VTmag mag (n) [1.905,15.193] Tycho-2 VT magnitude (Note 7)   (phot.mag;em.opt.V)
   (ALL)e_VTmag mag (n) [0.009,1.468] s.e. of VT (Note 7)   (stat.error)

ALL cols
    
(n) indicates a possible blank or NULL column  
   (ALL)prox   [3,999] proximity indicator (Note 8)   (meta.code)
   (ALL)TYC (char) [T] Tycho-1 star (Note 9)   (meta.code)
   (ALL)HIP  (n) [1,120404] Hipparcos number (meta.id)
   (ALL)CCDM (char) CCDM component identifier for HIP stars (Note 10)   (meta.code.multip)
   (ALL)RA(ICRS) deg Observed Tycho-2 Right Ascension, ICRS (pos.eq.ra;meta.main)
   (ALL)DE(ICRS) deg Observed Tycho-2 Declination, ICRS (pos.eq.dec;meta.main)
  (1)EpRA-1990 yr [0.81,2.13] epoch-1990 of RAdeg (time.epoch)
  (1)EpDE-1990 yr [0.72,2.36] epoch-1990 of DEdeg (time.epoch)
   (ALL)e_RAdeg mas s.e.RA*cos(dec), of observed Tycho-2 RA (Note 5)   (stat.error)
   (ALL)e_DEdeg mas s.e. of observed Tycho-2 Dec (Note 5)   (stat.error)
  (1)posflg (char) [ DP] type of Tycho-2 solution (Note 11)   (meta.id;stat.fit)
  (1)corr   [-1,1] correlation (RAdeg,DEdeg) (stat.correlation)
  (2+3)flag (char) [HT] data from Hipparcos or Tycho-1 (Note 2)   (meta.ref)

ALL cols
    
(n) indicates a possible blank or NULL column  
  (2+3)mflag (char) [ BVH] (Note 3)   (meta.code)

ALL cols
    
(n) indicates a possible blank or NULL column  
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