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[vsnet-alert 749] ER UMa: superoutburst overdue

ER UMa

   Observations reported to vsnet-obs indicate the superoutburst is apparently
overdue since its last in January.  This may be somehow associated with the
possible unexpected duration of the January superoutburst (cf. vsnet-alert
718, http://vsnet.kusastro.kyoto-u.ac.jp/vsnet/DNe/erumaob.html).

   Observers are strongly urged to monitor closely this ER UMa-type prototype
to see if any change of supercycle (formerly length = 43 days) happens.

  YYMMDD(UT)   mag  code
  970125.842   137  POY
  970126.792   135  BMU
  970126.817   137  POY
  970128.135  13.52  JEN
  970128.849   135  POY
  970131.773   132  Wnt
  970201.780   130  PIE
  970201.797   135  JEN
  970201.823  13.35V  Oud
  970201.887   135  BMU
  970202.917   135  POY
  970203.646   135  Wnt
  970205.960   142  PIE
  970206.860   151: PIE
  970207.860   148  POY
  970209.812   139  Wnt
  970211.156   149  POY
  970211.648  <139  Wnt
  970213.817   142  POY
  970218.701  <134  Wnt
  970218.869  <141  POY
  970219.607  <134  Wnt
  970221.715  <130  Wnt
  970221.822   132  POY

Regards,
Taichi Kato

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