About this world
K2-419 A b is a gas giant orbiting K2-419 A, a cool red dwarf 876 light-years from Earth. It is about 0.94 times the size of Jupiter and holds 0.62 Jupiter masses. It completes an orbit every 20.4 days at 0.12 AU from its star, closer than Mercury is to the Sun.
Its equilibrium temperature is about 377 K (104 °C): too cold for liquid water on its surface. At its size it almost certainly keeps a deep envelope of hydrogen and helium.
It was discovered in 2024 by transit with K2. A planet crosses its star and dims it by a tiny, periodic fraction.