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RU Hor: superhump period change Dear Colleagues, The VSNET Collaboration has received new data from Berto Monard and Greg Bolt. The object now clearly shows a systematic superhump period change, although the period derivative seems to show rather unusual behavior (a samll initial increase, followed by a rather sudden decrease). The changes seem to have occurred with a time scale of 1 day. Close follow-up observations are still strongly needed to follow the superhump evolution. The mean superhump period up to now is 0.07087 d. Regards, Taichi Kato VSNET Collaboration team
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