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AAVSO b Persei Results for November 2023 primary eclipse The above plots show the AAVSO photometry results for the November 2023 primary eclipse.  Individual observers' data have been offset so that their results match the out-of-eclipse curve that resembles a sine wave.   This bottom plot shows a simulated solution to try to fit a model to the observed light curve.  An animated simulation has been developed and an attempt will be made to make the animated simulation available.  D. Collins
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b Persei Results - September 2022 Secondary Eclipse

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b Persei Results - December 2021 primary eclipse

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  The lower figure shows the results for the b Persei eclipse by AAVSO observers listed in the legend.  The solid curve shows the simulated curve based on the predictions of the date and the parameters of the Jan 2020 curve.  As can be seen the timing of the eclipse is basically correct, but the other parameters such as star sizes, luminosities, separation, orbital line-of-nodes direction need adjusting.  I have made some progress in multi-parameter fitting using a simplex search algorithm in the spring and summer of 2021.  I will be developing this algorithm to use a searching routine that makes evaluations on all the eclipses that we have observed to date.
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