Posted: Jan 23, 2020 12:49 pm
The latest Astronomer's telegram on The Continued Unprecedented Fading of Betelgeuse notes that the current best guess is the dimming should reverse by the beginning of February...
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If these recent light changes are due to an extra-large amplitude light pulse on the ~420-day period, then the next mid-light minimum is expected during late January/early February, 2020. If Betelgeuse continues to dim after that time then other possibilities will have to be considered. The unusual behavior of Betelgeuse should be closely watched.