A dataset provided by the European Space Agency

Obs ID 2321294
Target/Line-of-sight HD 80606
Gaia DR2 ID Gaia DR2 1019003226022657920
URL https://cheops.unige.ch/archive_browser/?visit-id=2321294
DOI https://doi.org/10.57780/esa-9tk90wn
Author European Space Agency
Description of observation
  • Target RA (J2000): 140.656570 °
  • Target Dec (J2000): 50.60373 °
  • Gaia GMag: 8.82

  • Programme ID: CH_PR140062
  • Programme Manager: DELINE
  • PI of observing programme: Benz
  • Title of programme: Axis 2 - Constraining atmospheric properties of an eccentric gas giant (CAPEGG)
  • Abstract: HD 80606 is a unique planetary system with a Sun-like star hosting a highly-eccentric (e > 0.9) Jupiter-size planet with an orbital period 111.4 days. The orientation of the system with respect to the Earth is such that we are able to see both the transit and the occultation of HD 80606 b. The occultation occurs a few hours only before the periastron passage allowing us to observe the planet dayside at its highest temperature. Laughlin et al. (2009) could determine that the atmospheric temperature undergoes a rapid heating of more than 500 K (from 725 K to 1250 K) when approaching the star. The planet spends most of its time far from its star, where the received irradiation is hundreds of times smaller than the one at periastron allowing for reflective clouds to form in the atmosphere. The program aims at observing the occultations of HD 80606 b to constrain its reflectivity (geometric albedo) and infer the presence of reflective clouds, their composition and/or possible on-going evaporation processes.
Temporal Coverage 2024-01-20T11:48:00Z / 2024-01-22T06:37:00Z
Version 3.0
Mission Description CHEOPS (Benz et al., https://doi.org/10.1007/s10686-020-09679-4) is a European Space Agency (ESA) mission in partnership with Switzerland with important contributions to the payload and the ground segment from Austria, Belgium, France, Germany, Hungary, Italy, Portugal, Spain, Sweden and the United Kingdom.

The satellite has a single payload comprising an ultra-high precision photometer covering the 330 - 1100 nm wavelength range in a single photometric band. Observations are made as part of the Guaranteed Time Observing Programme that is formulated by the CHEOPS Science Team, and the Guest Observers Programme through which the Community at large can apply for CHEOPS time.
Creator Contact https://www.cosmos.esa.int/web/cheops/contact
Date Published 2024-10-31T19:59:23Z
Keywords CHEOPS, EXOPLANETS, wide-band photometer
Acknowledgements https://www.cosmos.esa.int/web/cheops-guest-observers-programme/publication-guidelines
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2024, 'HD 80606', 3.0, European Space Agency, https://doi.org/10.57780/esa-9tk90wn