  ASASSN-V J205543.90+240033.5 has been suggested to be a white dwarf pulsar by
Kato (2021, arXiv:2108.09060). We obtained time-resolved photometry and
identified 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 object
with AR Sco. We estimated that the strength of the spin pulse is 3.6 times
smaller than in AR Sco.
