Original Research By Young Twinkle Students (ORBYTS): Ephemeris Refinement of Transiting Exoplanets III


  • Billy Edwards University College London
  • Cynthia Ho
  • Hannah Osborne
  • Nabeeha Deen London Academy of Excellence
  • Ellie Hathorn London Academy of Excellence
  • Solomon Johnson London Academy of Excellence
  • Jiya Patel London Academy of Excellence
  • Varun Vogireddy London Academy of Excellence
  • Ansh Waddon London Academy of Excellence
  • Ayuub Ahmed Highams Park School
  • Muhammad Bham Highams Park School
  • Nathan Campbell Highams Park School
  • Zahra Chummun Highams Park School
  • Nicholas Crossley Highams Park School
  • Reggie Dunsdon Highams Park School
  • Robert Hayes Highams Park School
  • Haroon Malik Highams Park School
  • Frank Marsden Highams Park School
  • Lois Mayfield Highams Park School
  • Liston Mitchell Highams Park School
  • Agnes Prosser Highams Park School
  • Valentina Rabrenovic Highams Park School
  • Emma Smith Highams Park School
  • Rico Thomas Highams Park School
  • Anastasia Kokori Department of Physics and Astronomy, University College London
  • Angelos Tsiaras Department of Physics and Astronomy, University College London
  • Marcell Tessenyi
  • Giovanni Tinetti
  • Jonathan Tennyson




exoplanets, transit photometry, ground telescopes, HATS-1b, HATS-2b, HATS-3b, HAT-P-18b, HAT-P-27b, HAT-P-30b, HAT-P-55b, KELT-4Ab, WASP-25b, WASP-42b, WASP-57b, WASP-61b, WASP-123b


We report photometric follow-up observations of thirteen exoplanets (HATS-1 b, HATS-2 b, HATS-3 b, HAT-P-18 b, HAT-P-27 b, HAT-P-30 b, HAT-P-55 b, KELT-4A b, WASP-25 b, WASP-42 b, WASP-57 b, WASP-61 b and WASP-123 b), as part of the Original Research By Young Twinkle Students (ORBYTS) programme. All these planets are potentially viable targets for atmospheric characterisation and our data, which were taken using the LCOGT network of ground-based telescopes, will be combined with observations from other users of ExoClock to ensure that the transit times of these planets continue to be well-known, far into the future.