About this world
DMPP-2 b is a gas giant orbiting DMPP-2, a yellow-white F-type star (type F5V) 450 light-years from Earth. It is about 1.3 times the size of Jupiter (its size estimated from its mass), with at least 0.54 Jupiter masses (a minimum, measured by radial velocity). It completes an orbit every 5.2 days at 0.066 AU from its star, closer than Mercury is to the Sun.
Its equilibrium temperature is about 1,000 K (727 °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 2019 by radial velocity with Multiple Facilities. The star wobbles toward and away from us, Doppler-shifting its spectrum. DMPP-2 has 3 known planets; the others are DMPP-2 c and DMPP-2 d.