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.~M. Wilson, K. Alsubai, S.~J. Bentley, A. Collier Cameron, L. Hebb, K. Horne, J. Irwin, S.~R. Kane, M. Mayor, F. Pepe, D. PollaccoI. Skillen, S. Udry, P.~J. Wheatley, D.~J. Christian, R. Enoch, C.~A. Haswell, Y.~C. Joshi, A.~J. Norton, N. Parley, R. Ryans, R.~A. Street, I. Todd

Research output: Contribution to journalArticlepeer-review

33 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
JournalAstrophysical Journal Letters
Publication statusPublished - 1 Jan 2009


  • stars: individual: WASP-7 HD 197286, planetary systems


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