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BC UMa: superhump period update Dear Colleagues, We have received further very impressive data from Nakajima-san. After combining the reported and analyzed data up to now, the best superhump period between Feb. 3 and 5 is determined to be 0.06447(2) d. This period generally confirms the 2000 result (representative period 0.06452 d). The superhump period of this system is expected to be lengthen, as in short period SU UMa-type stars. Further continous observation of this extremely favorable superoutburs is encouraged. Regards, Taichi Kato VSNET Collaboration team
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