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[vsnet-obs 5976] possible brightening of AG Dra



Possible brightening of AG Dra

  The symbiotic variable AG Dra seems to show a tendency to rise, which may
be an indication of the next activity cycle following the 1996 July one.
Luthardt (in "Flares and Flashes", p.262) suggested the existence of an
optical periodicity of P=356 d, in addition to the U-band periodicity of
554 d (Meinunger, IBVS 1611).

  YYMMDD(UT)   mag  observer
  970508.253   102  (G. Hanson)
  970509.044   100  (G. Poyner)
  970509.460   101  (G. Hanson)
  970510.219   101  (G. Hanson)
  970511.056   100  (G. Poyner)
  970511.994    99  (G. Poyner)
  970512.944   100  (G. Poyner)
  970513.442   100  (G. Hanson)
  970513.946   100  (J. S. Day)
  970513.956   100  (G. Poyner)
  970514.424   100  (G. Hanson)
  970514.991   100  (G. Poyner)
  970517.401   101  (G. Hanson)
  970518.467   102  (G. Hanson)
  970518.949   100  (J. S. Day)
  970519.435   102  (G. Hanson)
  970519.976    99  (G. Poyner)
  970522.233    98  (G. Hanson)
  970523.987    99  (G. Poyner)
  970524.956    93  (A. Diepvens)
  970524.966    99  (G. Poyner)
  970525.224    97  (G. Hanson)
  970525.923   100  (J. S. Day)
  970525.985   100  (G. Poyner)
  970526.240    97  (G. Hanson)
  970527.210    98  (G. Hanson)
  970528.235    97  (G. Hanson)
  970528.953    98  (J. S. Day)
  970528.997    99  (G. Poyner)
  970529.990    98  (B. H. Granslo)
  970529.991    99  (G. Poyner)
  970530.988    99  (G. Poyner)
  970531.566    97  (S. Takahashi)
  970601.953    98  (J. S. Day)
  970601.967    99  (G. Poyner)
  970602.335    97  (G. Hanson)
  970603.216    95  (G. Hanson)
  970603.976    99  (G. Poyner)
  970603.980    97  (B. H. Granslo)
  970604.908    95  (A. Diepvens)
  970605.210    95  (G. Hanson)

Regards,
Taichi Kato