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ASASSN-V J205543.90+240033.5 has been suggested to be a white dwarf pulsar byKato (2021, arXiv:2108.09060). We obtained time-resolved photometry andidentified the orbital and spin periods to be 0.523490(1) d and 0.00678591(1) d= 9.77 min, respectively. These values strengthen the similarity of this objectwith AR Sco. We estimated that the strength of the spin pulse is 3.6 timessmaller than in AR Sco.

Orbital and spin periods of the candidate white dwarf pulsar ASASSN-V J205543.90+240033.5