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Radial velocity · 2004

HD 330075 b

This world receives 292× the starlight Earth does; a year lasts 3.39 days; the light you see left it 148 years ago.

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Size
1.3 × Jupiterestimated
A year
3.39 days0.04 AU
Temperature
717 °C990 K

About this world

HD 330075 b is a gas giant orbiting HD 330075, an orange dwarf (type K1) 148 light-years from Earth. It is about 1.3 times the size of Jupiter (its size estimated from its mass), with at least 0.48 Jupiter masses (a minimum, measured by radial velocity). It completes an orbit every 3.39 days at 0.04 AU from its star, closer than Mercury is to the Sun.

Its equilibrium temperature is about 990 K (717 °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 2004 by radial velocity with La Silla Observatory. The star wobbles toward and away from us, Doppler-shifting its spectrum.

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