A dataset provided by the European Space Agency

Obs ID 2377170
Target/Line-of-sight Determining the architecture of the K2-19 system
Gaia DR2 ID Gaia DR2 3798833775141351552
URL https://cheops.unige.ch/archive_browser/?visit-id=2377170
DOI https://doi.org/10.57780/esa-jhg86nc
Author European Space Agency, Jose manuel almenara villa
Description of observation
  • Target RA (J2000): 174.960327148438 °
  • Target Dec (J2000): 0.603569984436035 °
  • Gaia GMag: 12.806
  • Programme ID: CH_PR240013
  • PI of observing programme: Jose manuel almenara villa
  • Title of programme: Determining the architecture of the K2-19 system
  • Abstract: The K2-19 system consists of three known transiting planets, with two of them (planets b and c) close to 3:2 Mean Motion Resonance (MMR) and exhibiting large Transit Timing Variations (TTVs). Recent characterisation of the system revealed moderate eccentricities for these planets. However, convergent migration whitin a protoplanetary disk does not favour significant orbital eccentricity excitation. An additional fourth planet has been proposed to reduce the eccentricities of planets b and c. To distinguish between the proposed scenarios, additional transit observations are necessary. We aim to improve our understanding of the systems architecture, particularly its planetary eccentricities, by observing three transits of K2-19c using CHEOPS to refine the TTV model.
Temporal Coverage 2024-03-29T01:45:54Z / 2024-03-29T13:18:00Z
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 2026-03-05T11:41:40Z
Keywords CHEOPS exoplanet data, ESA CHEOPS mission dataset, exoplanet transit photometry data, high-precision space photometry observations, exoplanet light curves dataset, ultra-high precision stellar photometry, transit depth measurements, exoplanet radius determination data, time-series photometric observations, short-cadence photometry dataset, CHEOPS calibrated level 2 data, aperture photometry space data, stellar variability monitoring data, transiting exoplanet observations, hot Jupiter transit photometry, super-Earth transit data, exoplanet ephemeris refinement observations, phase curve photometry dataset, space-based optical photometry, visible wavelength exoplanet data, FITS light curve files, flux time-series exoplanet data, CHEOPS observation ID dataset, exoplanet follow-up observations, stellar host characterization photometry, ESA CHEOPS science archive data, precision transit timing measurements
Acknowledgements https://www.cosmos.esa.int/web/cheops-guest-observers-programme/publication-guidelines
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Jose manuel almenara villa et al., 2026, 'Determining the architecture of the K2-19 system', 3.0, European Space Agency, https://doi.org/10.57780/esa-jhg86nc