WASP-120 b, WASP-122 b, AND WASP-123 b: Three Newly Discovered Planets from the WASP-South Survey

Research output: Contribution to journalArticlepeer-review


  • O.~D. Turner
  • D.~R. Anderson
  • A. Collier Cameron
  • L. Delrez
  • D.~F. Evans
  • Michael Gillon
  • C. Hellier
  • E. Jehin
  • M. Lendl
  • P.~F.~L. Maxted
  • F. Pepe
  • D. Pollacco
  • Didier Queloz
  • D. Ségransan
  • B. Smalley
  • A.~M.~S. Smith
  • S. Udry
  • R.~G. West

Colleges, School and Institutes


We present the discovery by the WASP-South survey of three planets transiting moderately bright stars (V ap 11). WASP-120 b is a massive (4.85 M $_Jup$) planet in a 3.6-day orbit that we find likely to be eccentric (e=$$0.059$$$_-0.018$$^+0.025$) around an F5 star. WASP-122 b is a hot Jupiter (1.28 M $_Jup$, 1.74 R $_Jup$) in a 1.7-day orbit about a G4 star. Our predicted transit depth variation caused by the atmosphere of WASP-122 b suggests it is well suited to characterization. WASP-123 b is a hot Jupiter (0.90 M $_Jup$, 1.32 R $_Jup$) in a 3.0-day orbit around an old (tilde7 Gyr) G5 star.


Original languageEnglish
Pages (from-to)064401
Number of pages1
JournalPublications of the Astronomical Society of the Pacific
Issue number6
Early online date17 May 2016
Publication statusPublished - 1 Jun 2016


  • planets and satellites: individual (WASP-120b, WASP-122b, WASP-123b)