High Quality Content by WIKIPEDIA articles! WASP-43b is a transiting planet in orbit around the young, active, and low-mass star WASP-43 in the constellation Sextans. The planet is a Hot Jupiter with a mass almost twice that of Jupiter, but a radius that is slightly less than Jupiter`s. WASP-43b was flagged as a candidate by the SuperWASP program before they conducted follow-ups using instruments at La Silla Observatory in Chile, which confirmed the planet`s existence and provided orbital and physical characteristics. The planet`s discovery was published on April 14, 2011.