WASP-17b - possibly the first moving away from parent star exoplanet. International campaign on its observations

18th International Conference PhysicA.SPb

Sokov, E.N.^1,2

Central Astronomical Observatory, Pulkovo of Russian Academy of Sciences, Pulkovskoje shosse, 65, St-Petersburg

196140, Russia^1

Special Astrophysical Observatory, Russian Academy of Sciences, Nizhnij Arkhyz

369167, Russia^2

关键词: Exoplanet;    Non linear;    Orbital periods;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/769/1/012012/pdf
DOI  :  10.1088/1742-6596/769/1/012012

来源: IOP

【 摘 要 】

We present detected moving away from the parent star WASP-17b exoplanet and organized international campaign on its observations. The difference between the predicted moment of a mid of transit and the observed (O-C) reached ∼55 minutes. In the period from 2011 to 2015 yy. there was a non-linear increasing of the (O-C) data, which may point on an increasing of the orbital period of WASP-17b. Difference between duration of the transit obtained at 2011 year and 2015 year is ∼15 minutes. This fact also point on moving away from the star WASP- 17b exoplanet.