SPB LightCurve Question
I was looking at some TESS light curves for variables of different types and happened upon this interesting LC for NSV 18243 which is a composite of TESS sectors 9, 10 and 11. I did an analysis of the deep drops every 4 or so days and obtained the phase plot shown which combines the TESS data with Hipparcos. For the TESS data, the dips look like an EA, but I do not see them in the Hipparcos data. Note that the period determined from ASAS3 and Hipparcos is 0.527 d for this star and that period does also occur in TESS.