TIC 207206751 is a DAV star, which was observed intermittently by the Transiting Exoplanet Survey Satellite for more than 1000 hr from 2020 August to October. The Romero team performed detailed processing on the corresponding observational data and reported 10 observation periods for the star. Based on these 10 observation periods, we identified three incomplete quintuplets and three single modes. The rotation period of TIC 207206751 is determined via frequency splitting analysis to be 44.60 ± 1.97 hr. We used WDEC (v20) to evolve large sample models and conducted asteroseismological analyses of TIC 207206751. Two optimal models were obtained: model 1 with Teff = 12,600 ± 10 K, M* = 0.630 ± 0.005 M⊙, and model 2 with Teff = 10,600 ± 10 K, M* = 0.540 ± 0.005 M⊙. Both models feature thin H atmospheres (with–log(MH/M*) ≈ 7.00), reasonable central O abundances (h1 ≈ 0.60), and small σRMS values (less than 0.15 s). Using the luminosities of the two optimal models evolved from WDEC (v20), we calculated their asteroseismological distances as 36.54 ± 0.28 pc (model 1) and 33.08 ± 0.27 pc (model 2), respectively. Compared with the Gaia trigonometric parallax distance (34.86 ± 0.03 pc), the differences between the two optimal models are around 5%. Based on the parameters of these two optimal models and previous studies, we tend to think that TIC 207206751 is a low Teff DAV star.

