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J/AZh/79/675
 B-band photometry of BL Lac object ON 231 (Babadzhanyants+, 2002)
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1.J/AZh/79/675/table1B-band photometry of ON 231 (251 rows)
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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)
  Date "Y:M:D" (n)Observation date (time.epoch)
  HJD d Heliocentric Julian date (time.epoch)
  l_Bmag (char) [>] Limit flag on Bmag (meta.code.error)
  Bmag mag B magnitude (phot.mag;em.opt.B)
  e_Bmag mag (n) Uncertainty in B magnitude (stat.error)

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(n) indicates a possible blank or NULL column  
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