About this world
2MASS J19383260+4603591 b is a gas giant orbiting 2MASS J19383260+4603591, a hot blue star 1.29 thousand light-years from Earth. It is about 1.2 times the size of Jupiter (its size estimated from its mass) and holds 1.9 Jupiter masses. It completes an orbit every 406 days at 0.92 AU from its star, on a strongly elongated orbit (e = 0.33).
Its equilibrium temperature is about 670 K (397 °C): far too hot for liquid water on its surface. At its size it almost certainly keeps a deep envelope of hydrogen and helium.
It was discovered in 2015 by timing variations with Kepler. Pulsar, eclipse or transit timings drift as an unseen companion tugs on them. 2MASS J19383260+4603591 has 3 known planets; the others are Kepler-451 d and Kepler-451 c.