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[vsnet-alert 3841] DI UMa likely superoutburst

DI UMa likely superoutburst

  For those who have not been following DV UMa, the queer "ER UMa-type"
dwarf nova DI UMa seems to be undergoing a superoutburst, presumably
the first one caught after the off-season.  Observers are strongly urged
to monitor this object closely, since the change in supercycle has been
inferred using the reports to VSNET.

  YYMMDD(UT)   mag  observer
  991130.010  <153  (G. Poyner)
  991130.060  <154  (T. Kinnunen)
  991203.989  <155  (G. Poyner)
  991205.112  <155  (G. Poyner)
  991208.094  <155  (G. Poyner)
  991214.022  <153  (G. Poyner)
  991214.980  <154  (T. Kinnunen)
  991215.385  <155  (L. E. Shaw)
  991216.910   153  (T. Kinnunen)
  991219.962   146  (G. Poyner)

Regards,
Taichi Kato

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