[1] Follow-up observations were conducted by a European and American science team at the 1.2 m Leonhard Euler Telescope at La Silla Observatory in Chile, which further raised the possibility of the existence of a planet in WASP-15's orbit; use of the CORALIE spectrograph on the Euler Telescope between March 6, 2008, and July 17, 2008, revealed that the variations in radial velocity measurements were not because of an eclipsing binary star system.

[1] CORALIE and the High Resolution Echelle Spectrometer (HIRES) revealed the spectrum of WASP-15, which was used to derive the star's characteristics.

[1] The science team studying WASP-15 found that, after running best-fit models, WASP-15's radial velocity and transit shifts were most likely due to the existence of a planet.

It is located approximately 290 parsecs (900 light years) from Earth and has an apparent magnitude of 10.9, making it invisible to the unaided eye.

[4] In 2019 the IAU announced as part of NameExoWorlds that WASP-15 and its planet WASP-15b would be given official names chosen by school children from The Ivory Coast.