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 BVRI photometry of 3 BL Lac objects (Bai+, 1999)
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1.J/A+AS/136/455/table1Photometric data of three BL Lac objects (1205 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)
  Date "Y:M:D" (n)Observation date (time.epoch)
  JD d Julian Date (time.epoch)
  mag mag Magnitude (phot.mag)
  e_mag mag rms uncertainty on mag (stat.error)
  Band (char) [BVRI] Filter used for the magnitude (meta.code;instr.filter)
  Object (char) Name of the object observed (;meta.main)

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(n) indicates a possible blank or NULL column  
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