The internal structures of pulsating white dwarfs can be explored only with asteroseismology .
Time series photometric observations were made for the pulsating DA white dwarf ( ZZ Ceti star ) WD 0246+326 during 9 nights in 2014 with a bi-site observation campaign .
Eleven frequencies were detected including 1 triplet , 2 doublets , and 4 single modes , which are identified as either l = 1 or l = 2 modes with the complementarity of frequencies present in the literature .
From the multiplets , the rotation period of WD 0246+326 is derived as 3.78 \pm 0.11 days .
The average period spacing of the l=1 modes \Delta P = 29.3 \pm 0.2 s , implies that WD 0246+326 may be a massive ZZ Ceti star concerning the \Delta P - M _ { * } relationship for the DAVs .
Preliminary analysis derives the stellar parameters of M _ { * } = 0.98 \pm 0.01 { M _ { \odot } } and T _ { eff } = 11700 \pm 100 K by fitting the theoretical frequencies of the eigen modes to the observed ones .