[vsnet-campaign-dn 5239] EX Dra in irregular state

[Ohshima]

EX Dra in irregular state?

 EX Dra, one of UGSS stars, is undergoing an unusual change.
 This star have been in intermediate magnitude (around 14th mag.) since Nov.
 of 2007 while slightly faint outbursts show around 3th of Dec. and 16th of
 Dec. .
 This might be a bright minimum. At any rate, we need to pay more attention 
to this star. At some chance, this is the prelude of standstill.

Recent observations;
  20071004.798  <145  (Eddy Muyllaert)
  20071004.842   149  (Gary Poyner)
  20071005.811  <145  (Eddy Muyllaert)
  20071005.901  151C  (Ian Miller)
  20071007.809  <143  (Eddy Muyllaert)
  20071012.797   138  (Eddy Muyllaert)
  20071013.810  <138  (Eddy Muyllaert)
  20071014.807   141  (Eddy Muyllaert)
  20071017.819   146  (Eddy Muyllaert)
  20071017.824   143  (Gary Poyner)
  20071019.919  161C  (Ian Miller)
  20071020.781  <145  (Eddy Muyllaert)
  20071023.819   129  (Gary Poyner)
  20071105.980   144  (Gary Poyner)
  20071106.828  <143  (Eddy Muyllaert)
  20071111.810   146  (Gary Poyner)
  20071114.837   147  (Gary Poyner)
  20071115.778   146  (Gary Poyner)
  20071116.922   144  (Gary Poyner)
  20071123.903   147  (Gary Poyner)
  20071128.842   144  (Gary Poyner)
  20071203.907   136  (Gary Poyner)
  20071208.955   142  (Gary Poyner)
  20071210.735   143  (Gary Poyner)
  20071211.782   144  (Gary Poyner)
  20071215.785   144  (Gary Poyner)
  20071216.762   136  (Gary Poyner)