About this world
BD-17 63 b is a gas giant orbiting BD-17 63, an orange dwarf (type K5V) 112 light-years from Earth. It is about 1.1 times the size of Jupiter (its size estimated from its mass) and holds 5.2 Jupiter masses. It completes an orbit every 656 days at 1.3 AU from its star, on a strongly elongated orbit (e = 0.54).
Its equilibrium temperature is about 169 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 2008 by radial velocity with La Silla Observatory. The star wobbles toward and away from us, Doppler-shifting its spectrum.