Abstract:We analyzed TESS data of the IW And-type dwarf nova ST Cha during ordinary dwarf nova states. We have identified an orbital period of 0.285360(1) d. The object was reported to be eclipsing in the past using the data obtained in the 1970s, which is not in agreement with the present data. Despite the constant mean brightness, the strength of the orbital signal varied significantly, suggesting that the strength of the orbital signal does not always reflect the mass-transfer rate. During an outburst with a shoulde… Show more
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