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Orbital period change of Pleione?

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Ernst Pollmann
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Orbital period change of Pleione?

Regarding to the subject above, see:

http://astrospectroscopy.de/Orbital_period_change_of_Pleione.pdf

Ernst Pollmann
 

Olivier Thizy
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Orbital period change of Pleione

Ernst,

 

as usual - great work with input/observation from numerous observers...

 

Cordialement,

Olivier Thizy

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