Transiting exoplanets from the CoRoT space mission: XVII. the hot Jupiter CoRoT-17b: A very old planet

Sz Csizmadia*, C. Moutou, M. Deleuil, J. Cabrera, M. Fridlund, D. Gandolfi, S. Aigrain, R. Alonso, J. M. Almenara, M. Auvergne, A. Baglin, P. Barge, A. S. Bonomo, P. Bordé, F. Bouchy, H. Bruntt, L. Carone, S. Carpano, C. Cavarroc, W. CochranH. J. Deeg, R. F. Díaz, R. Dvorak, M. Endl, A. Erikson, S. Ferraz-Mello, Th Fruth, J. C. Gazzano, M. Gillon, E. W. Guenther, T. Guillot, A. Hatzes, M. Havel, G. Hébrard, E. Jehin, L. Jorda, A. Léger, A. Llebaria, H. Lammer, C. Lovis, P. J. MacQueen, T. Mazeh, M. Ollivier, M. Pätzold, D. Queloz, H. Rauer, D. Rouan, A. Santerne, J. Schneider, B. Tingley, R. Titz-Weider, G. Wuchterl

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


We report on the discovery of a hot Jupiter-type exoplanet, CoRoT-17b, detected by the CoRoT satellite. It has a mass of 2.43 ± 0.30 M Jup and a radius of 1.02 ± 0.07 RJup, while its mean density is 2.82 ± 0.38 g/cm3. CoRoT-17b is in a circular orbit with a period of 3.7681 ± 0.0003 days. The host star is an old (10.7 ± 1.0 Gyr) main-sequence star, which makes it an intriguing object for planetary evolution studies. The planet's internal composition is not well constrained and can range from pure H/He to one that can contain ∼380 earth masses of heavier elements.

Original languageEnglish
Article numberA41
JournalAstronomy and Astrophysics
StatePublished - 2011


  • planetary systems
  • techniques: photometric
  • techniques: radial velocities
  • techniques: spectroscopic


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