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VizieR

Simple TargetList Of TargetsFast Xmatch with large catalogs or Simbad
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J/A+A/426/827
  ubvyHβ photometry in NGC 1817 / 1807 (Balaguer-Nunez+ 2004)
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img(gal)
1.J/A+A/426/827/table4(c)Stroemgren photometry of stars in NGC 1817 area (7842 rows)
2.J/A+A/426/827/table5Cross-identification of stars (7842 rows)

 
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.
   (ALL)ID  Sequential identification number
  (1)RAJ2000 "h:m:s" Right ascension (J2000)
  (1)DEJ2000 "d:m:s" Declination (J2000)
  (1)xpos arcmin x-frame coordinate in arcmin
  (1)ypos arcmin y-frame coordinate in arcmin
  (1)b-y mag (n) b-y color
  (1)e_b-y mag (n) Error in b-y
  (1)Vmag mag (n) Johnson V magnitude
  (1)e_Vmag mag (n) Error in Vmag
  (1)m1 mag (n) m1 = (u-b)-(b-y) color index

ALL cols
    
(n) indicates a possible blank or NULL column(i)indexed column
  (1)e_m1 mag (n) Error in m1
  (1)c1 mag (n) c1 = (u-v)-(v-b) color index
  (1)e_c1 mag (n) Error in c1
  (1)Hb mag (n) Stroemgren Hβ index
  (1)e_Hb mag (n) Error in Hbeta
  (1)Mem (char) Membership label (M: member, NM: non-member)
  (2)BN04  Balaguer-Nunez et al., 2004, Cat. J/A+A/426/819 identification number
  (2)Webda  WEBDA (http://obswww.unige.ch/WEBDA) identification number
  (2)HIP  Hipparcos (I/239) identification number
  (2)TYC1  TYC1 (I/250) identification number
  (2)TYC2  TYC2 (I/250) identification number
  (2)USNO-A2 (char) USNO-A2 (I/252) identification number

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