Wasp-7: A Bright Transiting-Exoplanet System in the Southern Hemisphere

C. Hellier, D.R. Anderson, M. Gillon, T.A. Lister, P.F.L. Maxted, D. Queloz, B. Smalley, A.H.M.J. Triaud, R.G. West, D.H. Wilson, K. Alsiubai, S. Bentley, A. Collier Cameron, L. Hebb, K. Horne, J. Irwin, S. Kane, M. Mayor, F. Pepe, I. SkillenDon Pollacco, S. Udry, P.J. Wheatley, D.A. Christian, B. Enoch, C. Haswell, Y.C. Yoshi, A.C. Norton, N. Parley, Robert Ryans, R.A. Street, Ian Todd

Research output: Contribution to journalArticlepeer-review

41 Citations (Scopus)


We report that a Jupiter-mass planet, WASP-7b, transits the V = 9.5 star HD 197286 every 4.95 d. This is the brightest discovery from the WASP-South transit survey so far and is currently the brightest transiting-exoplanet system in the southern hemisphere. WASP-7b is among the densest of the known Jupiter-mass planets, suggesting that it has a massive core. The planet mass is 0.96+0.12 -0.18 M Jup, the radius is 0.915+0.046 -0.040 R Jup, and the density is 1.26+0.25 -0.21 ?Jup (1.67+0.33 -0.28 g cm-3).
Original languageEnglish
Pages (from-to)L89-L91
Number of pages3
JournalAstrophysical Journal Letters
Issue number1 PART 2
Publication statusPublished - Jan 2009

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics


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