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21 July 2021 at 1:02 pm #584496
Recent V-band data on the AAVSO website show strong modulation close to the orbital period of 0.05408978(5) d reported by John Thorstensen.
Peranso PDM analysis of 3 night’s data.
Spectra calibrated in absolute flux follow the changing brightness of the star with the Balmer lines evolving from initally pure absorption to now having emission cores.