XTE J1118+480 : Superhump still presence

According to IAU Circular 7617, J. Casares et al. detected superhumps with a period of 0.17049(1) day using their data during Dec. 2000 - Apr 2001. The data set obtained during the outburst in 2000 by VSNET team shows the mean superhump period during the outburst is slightly longer than that reported in IAUC 7617, which may imply a continuous period changing. In the case of SU UMa-type dwarf nova, the "late superhump" is sometimes observed after superoutburst (vsnet-campaign 894).

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