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II/36
  UBV and uvby-beta observations of Orion OB1 Association (Warren+ 1977)
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1.II/36/ubv(c)UBV data (357 rows)
2.II/36/uvbybeta(c)uvby-beta data (1595 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)
  (1)Brun  Number in Brun's catalogue (1935POLyo...1...12B) (meta.id;meta.main)
   (ALL)WH  (n) Number assigned by Warren and Hesser (1977ApJS...34..115W) (meta.id)
   (ALL)Vmag mag Observed visual magnitude (Note 1)   (phot.mag;em.opt.V)
  (1)u_Vmag (char) [ :] certain nightly V are discordant (Note 2)   (meta.code.error)
  (1)B-V mag Observed B-V (Note 3)   (phot.color;em.opt.B;em.opt.V)
  (1)u_B-V (char) [ :] if uncertain nightly B-V (meta.code.error;phot.color;em.opt.B)
  (1)U-B mag (n) observed U-B color (Note 4)   (phot.color;em.opt.U;em.opt.B)
  (1)u_U-B (char) [ :] if uncertain nightly U-B; two colons if nightly U-B very uncertain. (meta.code.error;phot.color;em.opt.U)
  (1)DATE-UBV "Y:M:D" [0-9.] Date of observation in form YY.MM.DD (e.g. 68.12.04 = 4 December 1968). (time.epoch)
   (ALL)Simbad (char) ask the Simbad data-base about this object (meta.ref.url)

ALL cols
    
(n) indicates a possible blank or NULL column(i)indexed column
   (ALL)_RA deg (i) Position from Simbad, or from Brun's charts (right ascension part) (pos.eq.ra;meta.main)
   (ALL)_DE deg (i) Position from Simbad, or from Brun's charts (declination part) (pos.eq.dec;meta.main)
  (2)m_WH (char) Component identification for multiple systems (meta.code.multip)
  (2)Ident (char) Other identification (Note 1)   (meta.id)
  (2)b-y mag (n) b-y color index (phot.color;em.opt.B;em.opt.V)
  (2)m1 mag (n) m1 ((v-b) - (b-y)) color index (phot.color)
  (2)c1 mag (n) c1 ((u-v) - (v-b)) color index (phot.color)
  (2)DATE-uvby "Y:M:D" (n) [0-9.] UT date of uvby observation (time.epoch;obs)
  (2)beta mag (n) beta index (phot.color)
  (2)DATE-beta "Y:M:D" (n) [0-9.] UT date of β observation (time.epoch;obs)

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