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Simple TargetList Of TargetsFast Xmatch with large catalogs or Simbad
Target Name (resolved by Sesame) or Position:
Target dimension:
NB: The epoch used for the query is the original epoch of the table(s)Radius Box size

  Optical counterparts of ROSAT X-ray in 2 fields (Greiner+, 2015)
Post annotation
1.J/A+A/575/A42/table9Optical objects inside or near the error circles of the ROSAT positions in γ Sge (415 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)
  Xseq  Running number of the X-ray source (meta.number)
  m_Xseq (char) [a-j] ID for multiple optical objects (meta.code.multip)
  RAJ2000 "h:m:s" (n)(i) Right Ascension (J2000) (Note 1)   (pos.eq.ra;meta.main)
  DEJ2000 "d:m:s" (n)(i) Declination (J2000) (Note 1)   (pos.eq.dec;meta.main)
  Sep arcsec (n) Distance between X-ray centroid and object (pos;arith.diff)
  Name (char) Bright star name (;meta.main)
  Var (char) C if constant or GCVS Name if variable (Note 2)   (
  Type (char) Source type (Note 3)   (meta.code;src.var)
  SpType (char) Spectral Type from Simbad (Note 4)   (src.spType)
  Bmag mag (n) USNO B magnitude (phot.mag;em.opt.B)
  Vmag mag (n) USNO V magnitude (phot.mag;em.opt.V)
  Rmag mag (n) USNO R magnitude (phot.mag;em.opt.R)
  Ampl (char) Amplitude of optical variability (src.var.amplitude;em.opt)
  X/opt [-] (n) log of X-ray to optical flux ratio (Note 5)   (phot.flux;arith.ratio)

ALL cols
(n) indicates a possible blank or NULL column(i)indexed column
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usage  Display UCD1+    UCD1  
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