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  I/329
 URAT1 Catalog (Zacharias+ 2015)
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1.I/329/urat1URAT1 catalog (228276482 rows)
 

 
Query by Constraints constraints help applied on Columns (Output Order: + - )
ShowSortColumn  Constraint Explain   (UCD)
  URAT1 (char) URAT1 recommended identifier (ZZZ-NNNNNN) (Note 13)   (meta.id;meta.main)
  RAJ2000 deg Right ascension on ICRS, at "Epoch" (Note 1)   (pos.eq.ra;meta.main)
  DEJ2000 deg Declination on ICRS, at "Epoch" (Note 1)   (pos.eq.dec;meta.main)
  sigs mas Position error per coordinate, from scatter (Note 2)   (stat.error)
  sigm mas Position error per coordinate, from model (Note 2)   (stat.error)
  Ns  (nst) Total number of sets the star is in (Note 3)   (meta.number)
  Nu  (nsu) Number of sets used for mean position (Note 3)   (meta.number)
  Epoch yr (epoc) Mean URAT observation epoch (Note 1)   (time.epoch;obs;stat.mean)
  f.mag mag (n)(mmag) mean URAT model fit magnitude (Note 4)   (phot.mag;em.opt.R)
  e_f.mag mag (n)(sigp) URAT photometry error (Note 5)   (stat.error)
  Nm  (nsm) Number of sets used for URAT magnitude (Note 3)   (meta.number)

ALL cols
    
(n) indicates a possible blank or NULL column  
  r  (ref) largest reference star flag (Note 6)   (meta.code)
  Nit  (nit) Total number of images (observations) (meta.number)
  Niu  (niu) Number of images used for mean position (meta.number)
  Ngt  (ngt) Total number of 1st order grating observations (meta.number)
  Ngu  (ngu) Number of 1st order grating positions used (meta.number)
  pmRA mas/yr (n)(pmr) Proper motion RA*cosDec (from 2MASS) (Note 7)   (pos.pm;pos.eq.ra)
  pmDE mas/yr (n)(pmd) Proper motion in Declination (Note 7)   (pos.pm;pos.eq.dec)
  e_pm mas/yr (n)(pme) Proper motion error per coordinate (Note 8)   (stat.error)
  mf2   [1/11] Match flag URAT with 2MASS (Note 9)   (meta.code)
  mfa   [1/11] Match flag URAT with APASS (Note 9)   (meta.code)
  G (char) [-] "-" if there is no match with GSC2.4 (Note 14)   (meta.code)
  2Mkey  (n)(id2) unique 2MASS star identification number (meta.id)
  Jmag mag (n)(jmag) 2MASS J-band magnitude (phot.mag;em.IR.J)

ALL cols
    
(n) indicates a possible blank or NULL column  
  e_Jmag mag (n)(ejmag) Error on Jmag (stat.error;phot.mag;em.IR.J)
  q_Jmag (char) [0,58] J-band quality-confusion flag (Note 10)   (meta.code.qual)
  Hmag mag (n)(hmag) 2MASS H-band magnitude (phot.mag;em.IR.H)
  e_Hmag mag (n)(ehmag) Error on H-band magnitude (Note 10)   (stat.error;phot.mag;em.IR.H)
  q_Hmag (char) [0,58] H-band quality-confusion flag (Note 10)   (meta.code.qual)
  Kmag mag (n)(kmag) 2MASS Ks-band magnitude (phot.mag;em.IR.K)
  e_Kmag mag (n)(ekmag) Error on Ks-band magnitude (Note 10)   (stat.error;phot.mag;em.IR.K)
  q_Kmag (char) [0,58] Ks-band quality-confusion flag (Note 10)   (meta.code.qual)
  Nn  (ann) Number of APASS observation nights (Note 12)   (meta.number)
  No  (ano) Number of APASS observations (Note 12)   (meta.number)
  Bmag mag (n)(abm) APASS B-band magnitude (Note 11)   (phot.mag;em.opt.B)
  e_Bmag mag (n)(ebm) Error on Bmag (stat.error;phot.mag;em.opt.B)
  Vmag mag (n)(avm) APASS V-band magnitude (phot.mag;em.opt.V)
  e_Vmag mag (n)(evm) Error on Vmag (stat.error;phot.mag;em.opt.V)
  gmag mag (n)(agm) APASS g-band magnitude (phot.mag;em.opt.B)
  e_gmag mag (n)(egm) Error on gmag (stat.error;phot.mag;em.opt.B)
  rmag mag (n)(arm) APASS r-band magnitude (phot.mag;em.opt.R)
  e_rmag mag (n)(erm) Error on rmag (stat.error;phot.mag;em.opt.R)
  imag mag (n)(aim) APASS i-band magnitude (phot.mag;em.opt.I)
  e_imag mag (n)(eim) Error on imag (stat.error;phot.mag;em.opt.I)

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