This is an interesting star. The mag change is a bit low for a typical nova. I have done a few hours of time series on the star and it has a slow sinusiodal variation in its brightness over about 3 hours of 0.04 mag in V.
see
http://users.northnet.com.au/~bohlse...00-BJR-847.gif
This is also quite unusual. It certainly needs more investigating.