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 The Tycho-2 Catalogue (Hog+ 2000)
Post annotation
1.I/259/suppl_2The Tycho-2 supplement-2 (1146 rows)

Query by Constraints constraints help applied on Columns (Output Order: + - )
ShowSortColumn  Constraint Explain   (UCD)
  recno  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)
  TYC1   [2,9529] TYC1 from TYC (Note 1)   (;meta.main)
  TYC2   [1,12112] TYC2 from TYC (Note 1)   (;meta.main)
  TYC3   [1,4] TYC3 from TYC (Note 1)   (;meta.main)
  flag (char) [HT] data from Hipparcos or Tycho-1 (Note 2)   (meta.ref)
  RA(ICRS) deg Right Asc, ICRS, at epoch=J1991.25 (pos.eq.ra;meta.main)
  DE(ICRS) deg Decl, ICRS, at epoch=J1991.25 (pos.eq.dec;meta.main)
  pmRA mas/yr (n) []? prop. mot. in RA*cos(dec) (;pos.eq.ra)
  pmDE mas/yr (n) []? prop. mot. in Dec (;pos.eq.dec)
  e_RAdeg mas s.e. RA*cos(dec) (stat.error)
  e_DEdeg mas s.e. of Dec (stat.error)

ALL cols
(n) indicates a possible blank or NULL column  
  e_pmRA mas/yr (n) []? s.e. prop mot in RA * cos(dec) (stat.error)
  e_pmDE mas/yr (n) []? s.e. of proper motion in Dec (stat.error)
  mflag (char) [ BVH] (Note 3)   (meta.code)
  BTmag mag (n) []? Tycho-1 BT magnitude (4) (Note 4)   (phot.mag;em.opt.B)
  e_BTmag mag (n) []? s.e. of BT (4) (Note 4)   (stat.error)
  VTmag mag (n) []? Tycho-1 VT or Hp magnitude (4) (Note 4)   (phot.mag;em.opt.V)
  e_VTmag mag (n) []? s.e. of VT (4) (Note 4)   (stat.error)
  prox   [1,999] proximity indicator (Note 5)   (meta.code)
  TYC (char) [ T] Tycho-1 star (meta.code)
  HIP  (n) [1,120404] Hipparcos number (
  CCDM (char) CCDM component identifier for HIP stars (meta.code.multip)

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