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We present the results of our detailed light curve analysis of the ZZ Cetistar HS 1625+1231. We collected photometric time series data at KonkolyObservatory on 14 nights, and performed Fourier analysis of these data sets. Wedetected 11 significant frequencies, where six of them are found to beindependent pulsation modes in the 514 - 881 s period range. By utilising thesefrequencies, we performed preliminary asteroseismic investigations to giveconstraints on the main physical parameters, and to derive seismic distancesfor the star. Finally, we compared the astrometric distance provided by theGaia EDR3 data with those seismic distances. Our selected model, consideringboth the spectroscopic measurements and the distance value provided by Gaia,has $T_{eff}$ = 11 000 K and $M_*$ = 0.60 $M_{\odot}$.

Ground-based observations of the ZZ Ceti star HS 1625+1231