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What date was the minimum of it? I looked at the Bolletin 2018 and did not find it. I can watch it in the early evening here.
SU Aur isn't an LPV, but a Young Stelar Object, thus you won't find it in the AAVSO Boulletin...
Clear skies,
Robert
Even worse (or better), you can't predict YSO maxima or minima.