About this world
WASP-84 b is a gas giant orbiting WASP-84, an orange dwarf (type K0) 328 light-years from Earth. It is about 0.96 times the size of Jupiter and holds 0.69 Jupiter masses. It completes an orbit every 8.52 days at 0.078 AU from its star, closer than Mercury is to the Sun.
Its equilibrium temperature is about 732 K (459 °C): far too hot for liquid water on its surface. At its size it almost certainly keeps a deep envelope of hydrogen and helium. Its atmosphere has already been studied in one spectroscopic observation by the James Webb Space Telescope.
It was discovered in 2014 by transit with SuperWASP. A planet crosses its star and dims it by a tiny, periodic fraction. WASP-84 has 2 known planets; the others are WASP-84 c.