Europlanet Science Congress 2022
Palacio de Congresos de Granada, Spain
18 – 23 September 2022
Europlanet Science Congress 2022
Palacio de Congresos de Granada, Spain
18 September – 23 September 2022
EPSC Abstracts
Vol. 16, EPSC2022-200, 2022, updated on 23 Sep 2022
https://doi.org/10.5194/epsc2022-200
Europlanet Science Congress 2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Investigation of planetary systems of WASP, TrES, Qatar and Kepler projects by using transit photometry with O-C parameter tracking and TTV method application on Kyiv Comet Station

Anastasiia Nahurna1, Mykhailo Solomakha1, Mariia Lobodenko1, and Olexandr Baransky2
Anastasiia Nahurna et al.
  • 1Taras Shevchenko National University of Kyiv, Faculty of Physics, Astronomy and Space Physics Department, Kyiv, Ukraine (muraveidimenn@gmail.com)
  • 2Astronomical Observatory Taras Shevshenko National University of Kyiv, Kyiv, Ukraine (abransky@ukr.net)

We report the results of the investigation of five planetary systems TrES-3b, Kepler-17b, WASP-3b, Qatar-1b, and Qatar-2b. For the exoplanets TrES-3b, Kepler-17b, WASP-3b, and Qatar-1b, the obtained results of the center-transit time, depth and length of transit agree with the ephemeris data, while for two observations of the Qatar-2 system for the planet Qatar-2b there is a clear decreasing trend of the value of the O-C parameter.

Observations were carried out from 2 April 2021 to 14 February 2022 by using a 70-cm reflecting telescope AZT-8 on the Astronomical Observatory of Taras Shevchenko National University of Kyiv / Kyiv comet station (Kyiv, Ukraine). Photometric processing of the observation results was performed by using the Muniwin program. The obtained exoplanet transit brightness curves were published in ETD. The accuracy and quality of our observations on the ETD database scale ranged from 1 to 3.

Additionally, applying the method of time transit variation (TTV) to our and Exoplanet Transit Database (ETD) data, we found a possible gravitational effect on the orbit of the exoplanet Qatar-2b of another massive body. This suggests that the assumption of the existence of the planet Qatar-2c conjectured in Bryan et al. (2011) is true.

How to cite: Nahurna, A., Solomakha, M., Lobodenko, M., and Baransky, O.: Investigation of planetary systems of WASP, TrES, Qatar and Kepler projects by using transit photometry with O-C parameter tracking and TTV method application on Kyiv Comet Station, Europlanet Science Congress 2022, Granada, Spain, 18–23 Sep 2022, EPSC2022-200, https://doi.org/10.5194/epsc2022-200, 2022.

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