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[vsnet-alert 2642] Unusually high outburst frequency of SS Aur

Unusually high outburst frequency of SS Aur

  The SS Cyg-type dwarf nova SS Aur is exhibiting an anmoualous sequence
of outbursts with extremely enhanced activity.  Most of the recent outbursts
are so-called "anomalou" type, characterized by a slow rise.  A new outburst
is apparently ongoing, after a short (~15 d) period of quiescence.

  YYMMDD(UT)   mag  observer
  990208.787   150  (G. Comello)
  990209.031   148  (G. Poyner)
  990209.699  <145  (T. Kinnunen)
  990209.812  <139  (E. Muyllaert)
  990210.015   149  (G. Poyner)
  990210.690  <139  (T. Kinnunen)
  990210.789  <139  (E. Muyllaert)
  990210.901   150  (G. Poyner)
  990211.144  <145  (J. McKenna)
  990211.860  <139  (E. Muyllaert)
  990211.940  <139  (T. Kinnunen)
  990212.571   145  (T. Watanabe)
  990213.476  <139  (T. Watanabe)
  990213.613  <145  (H. Itoh)
  990213.778  <132  (M. Westlund)
  990213.783   151  (G. Comello)
  990213.856  <139  (E. Muyllaert)
  990214.540  <132  (H. Maehara)
  990215.169   144  (R. J. Modic)
  990216.606  <132  (H. Maehara)
  990217.042   146  (G. Poyner)
  990217.533   135  (S. Takahashi)
  990217.592   137  (T. Watanabe)
  990218.830   133  (J. Ripero)

Regards,
Taichi Kato

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