WASP-10b: A 3M J, gas-giant planet transiting a late-type K star

D. J. Christian, N. P. Gibson, E. K. Simpson, R. A. Street, I. Skillen, D. Pollacco, A. Collier Cameron, Y. C. Joshi, F. P. Keenan, H. C. Stempels, C. A. Haswell, K. Horne, D. R. Anderson, S. Bentley, F. Bouchy, W. I. Clarkson, B. Enoch, L. Hebb, G. Hébrard, C. HellierJ. Irwin, S. R. Kane, T. A. Lister, B. Loeillet, P. Maxted, M. Mayor, I. McDonald, C. Moutou, A. J. Norton, N. Parley, F. Pont, D. Queloz, R. Ryans, B. Smalley, A. M S Smith, I. Todd, S. Udry, R. G. West, P. J. Wheatley, D. M. Wilson

Research output: Contribution to journalArticle

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We report the discovery of WASP-10b, a new transiting extrasolar planet (ESP) discovered by the Wide Angle Search for Planets (WASP) Consortium and confirmed using Nordic Optical Telescope FIbre-fed Echelle Spectrograph and SOPHIE radial velocity data. A 3.09-d period, 29 mmag transit depth and 2.36 h duration are derived for WASP-10b using WASP and high-precision photometric observations. Simultaneous fitting to the photometric and radial velocity data using a Markov Chain Monte Carlo procedure leads to a planet radius of 1.28R J, a mass of 2.96M J and eccentricity of ≈0.06. WASP-10b is one of the more massive transiting ESPs, and we compare its characteristics to the current sample of transiting ESP, where there is currently little information for masses greater than ≈2M J and non-zero eccentricities. WASP-10's host star, GSC 2752-00114 (USNO-B1.0 1214-0586164) is among the fainter stars in the WASP sample, with V = 12.7 and a spectral type of K5. This result shows promise for future late-type dwarf star surveys.

Original languageEnglish
Pages (from-to)1585-1590
Number of pages6
JournalMonthly Notices of the Royal Astronomical Society
Issue number4
Publication statusPublished - 1 Feb 2009
Externally publishedYes



  • Methods: data analysis
  • Stars: planetary systems
  • Techniques: photometric
  • Techniques: radial velocities

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

Cite this

Christian, D. J., Gibson, N. P., Simpson, E. K., Street, R. A., Skillen, I., Pollacco, D., Collier Cameron, A., Joshi, Y. C., Keenan, F. P., Stempels, H. C., Haswell, C. A., Horne, K., Anderson, D. R., Bentley, S., Bouchy, F., Clarkson, W. I., Enoch, B., Hebb, L., Hébrard, G., ... Wilson, D. M. (2009). WASP-10b: A 3M J, gas-giant planet transiting a late-type K star. Monthly Notices of the Royal Astronomical Society, 392(4), 1585-1590. https://doi.org/10.1111/j.1365-2966.2008.14164.x