V405 Vul: New SU UMa star located at the upper border of the period gap
T. Vanmunster performed a time-series observations on August 25/26,
and revealed that it clearly shows superhumps with the period of
0.1205 +/- 0.0019 d and a full superhump amplitude of 0.19 mag.
This findings confirmed V405 Vul as an SU UMa dwarf nova with the
second-longest superhump period, and very close to the upper border
of the period gap
(vsnet-campaign 452).
T. Vaunmunster furthermore reported the fully grown superhumps with
the amplitude of 0.4mag observed on August 29/30
(vsnet-campaign 459).
J. Pietz reported his CCD observations before this outburst
including an outburst in 1999 July/August
(vsnet-campaign 466).
T. Vanmunster reported it was still in the superoutburst on September 6,
which means the outburst lasts at least 14 days
(vsnet-campaign 479).