WASP-104b and WASP-106b: two transiting hot Jupiters in 1.75-day and 9.3-day orbits

Research output: Contribution to journalArticlepeer-review


  • A. M. S. Smith
  • D. R. Anderson
  • D. J. Armstrong
  • S. C. C. Barros
  • A. S. Bonomo
  • F. Bouchy
  • D. J. A. Brown
  • A. Collier Cameron
  • L. Delrez
  • F. Faedi
  • M. Gillon
  • Y. Gómez Maqueo Chew
  • G. Hébrard
  • E. Jehin
  • M. Lendl
  • T. M. Louden
  • P. F. L. Maxted
  • G. Montagnier
  • M. Neveu-VanMalle
  • H. P. Osborn
  • F. Pepe
  • D. Pollacco
  • D. Queloz
  • J. W. Rostron
  • D. Segransan
  • B. Smalley
  • O. D. Turner
  • S. Udry
  • S. R. Walker
  • R. G. West
  • P. J. Wheatley

Colleges, School and Institutes


We have used the WASP survey to discover two exoplanetary systems, each consisting of a Jupiter-sized planet transiting an 11th-magnitude (V) main-sequence star. WASP-104b orbits its star in 1.75 d, whereas WASP-106b has the fourth-longest orbital period of any planet discovered by means of transits observed from the ground, orbiting every 9.29 d. Each planet is more massive than Jupiter (WASP-104b has a mass of 1.27 ± 0.05MJup, while WASP-106b has a mass of 1.93 ± 0.08MJup). Both planets are just slightly larger than Jupiter, with radii of 1.14 ± 0.04 and 1.09 ± 0.04RJup for WASP-104 and WASP-106, respectively. No significant orbital eccentricity is detected in either system, and while this is not surprising in the case of the short-period WASP-104b, it is interesting in the case of WASP-106b, because many otherwise similar planets are known to have eccentric orbits. 


Original languageEnglish
Article numberA64
Number of pages8
JournalAstronomy and Astrophysics
Publication statusPublished - 17 Oct 2014


  • planets and satellites: detection, planets and satellites: fundamental parameters, stars: individual: WASP-104b, stars: individual: WASP-106b, planetary systems