The Eccentric Eclipsing Binary V889 Aquilae |
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| Authors: | Marek Wolf Roger Diethelm Miloslav Zejda |
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| Institution: | (1) Astronomical Institute, Charles University, Prague, Czech Republic;(2) Astronomical Institute, University of Basel, Basel, Switzerland;(3) Nicolas Copernicus Observatory and Planetarium, Brno, Czech Republic |
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| Abstract: | Several new times of minimum light recorded with photoelectric or CCD means have been gathered for the eccentric eclipsing
binary V889 Aql (P = 11.1 days, e = 0.37). Its O–C diagram is presented, and improved elements of the apsidal motion and the light-time effect (LITE) are given. We found a
long apsidal motion period of about 24 400 ± 2400 years and a period of the third body of about 52 ± 2 years. |
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| Keywords: | eclipsing binary apsidal motion light-time effect |
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