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[vsnet-alert 3173] V503 Cyg anomalously high outburst frequency

V503 Cyg anomalously high outburst frequency

  The SU UMa-type dwarf nova V503 Cyg (previously known as the short
supercycle system, Ts=89d Tn=30d) seems to be undergoing an extremely
enhanced outburst activeity state.  Recent observations suggest outbursts
May 25 (Poyner, mv=14.5), Jun. 8 (Poyner, mv=15.3),
Jun. 11 (McKenna, mv=14.4), Jun. 19 (Muyllaert, mv=14.4).
Observations are encouraged to see whether the star has changed its
outburst properties, and whether the known superhump nature has changed.

  YYMMDD(UT)   mag  observer
  990615.028  <150  (G. Poyner)
  990616.007  <142  (E. Muyllaert)
  990616.047  <146  (G. Poyner)
  990617.042  <146  (G. Poyner)
  990618.067  <146  (G. Poyner)
  990619.016   144  (E. Muyllaert)
  990619.022   143  (G. Poyner)
  990621.983  <142  (E. Muyllaert)
  990622.008  <152  (G. Poyner)
  990624.997  <142  (E. Muyllaert)
  990630.005   144  (G. Poyner)

Regards,
Taichi Kato

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