About this world
DMPP-8 b is a gas giant orbiting DMPP-8, a yellow-white F-type star 248 light-years from Earth. It is about 0.96 times the size of Jupiter (its size estimated from its mass), with at least 0.26 Jupiter masses (a minimum, measured by radial velocity). It completes an orbit every 62.9 days at 0.31 AU from its star, closer than Mercury is to the Sun, on a strongly elongated orbit (e = 0.28).
Its equilibrium temperature is about 580 K (307 °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 2026 by radial velocity with Multiple Observatories. The star wobbles toward and away from us, Doppler-shifting its spectrum.