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Radial velocity · 2006

HD 185269 b

This world receives 833× the starlight Earth does; a year lasts 6.84 days; the light you see left it 170 years ago.

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Size
1.2 × Jupiterestimated
A year
6.84 days0.077 AU
Temperature
1,182 °C1,456 K

About this world

HD 185269 b is a gas giant orbiting HD 185269, a yellow, Sun-like star (type G0IV) 170 light-years from Earth. It is about 1.2 times the size of Jupiter (its size estimated from its mass), with at least 1 Jupiter masses (a minimum, measured by radial velocity). It completes an orbit every 6.84 days at 0.077 AU from its star, closer than Mercury is to the Sun, on a strongly elongated orbit (e = 0.23).

Its equilibrium temperature is about 1,456 K (1,182 °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 2006 by radial velocity with Lick Observatory. The star wobbles toward and away from us, Doppler-shifting its spectrum.

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