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Radial velocity · 2011

HD 82886 b

This world receives 5.57× the starlight Earth does; a year lasts 705 days; the light you see left it 414 years ago.

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Size
1.2 × Jupiterestimated
A year
705 days1.58 AU
Temperature
163 °C436 K

About this world

HD 82886 b is a gas giant orbiting HD 82886, a giant star (type G0) 414 light-years from Earth. It is about 1.2 times the size of Jupiter (its size estimated from its mass), with at least 2.3 Jupiter masses (a minimum, measured by radial velocity). It completes an orbit every 705 days at 1.6 AU from its star.

Its equilibrium temperature is about 436 K (163 °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 2011 by radial velocity with W. M. Keck Observatory. The star wobbles toward and away from us, Doppler-shifting its spectrum.

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