"Inverted" pulsating variable

Hi everyone,

I've just found another variable star in data mining, but I have doubts about the type. Normally in pulsating variables, the rising time is shorter, but this time it's opposite. I've matched ASAS-SN and WASP data and they show almost the same results. Except at ~0.6, where ASAS-SN is definitely below (graph 1). Based on ASAS-SN's period, which is 0.57887 d here. Requires a little shifting, by about 0.2 phase to WASP data.

This encouraged me to find a period using WASP data only (after removing bad measurements), getting 0.57859 d from those. The result I got, the graph, was similar, but completely destroyed ASAS-SN's shape. So I went another way - I increased the period, to make graphs meet themselves again. At a little higher period (0.57895 d, 0.2 of phase forwards), the ~0.6 issue went away, but a similar one appeared at ~0.8 (graph 2).

That makes me think that the period might be changing. What are your thoughts about that (and type)?

Here are some data: B-V=0.96; J-K= 0.71. Identification: GSC 0327-100326

Regards,

Gabriel Murawski