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[vsnet-campaign-v4641sgr 68] V4641 Sgr: still calm


    We have finished tonight observation on V4641 Sgr at Ouda.
The obtained light curve is still calm, no short-term modulations 
are seen.  In the light curve on May 29, there is gradual brightening 
trend during our run.  This brightening seems to be explained with 
the normal elliptical modulations (due to the orbital motion of the 
secondary star), which have been observed at the quiescent state of 
V4641 Sgr.  However, it might be a brightening to a new activity, 
so confirmation and follow-up time-series observations are encouraged.

Regards,
Makoto Uemura

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