[Fe/H] −0.05 ± 0.02 Discoverer(s) Lovis et al. | Discovery date May 18, 2006 Discovery status Published | |
HD 69830 b is a Neptune-mass or super-Earth-mass exoplanet orbiting the star HD 69830. It is 10 times more massive than Earth. It also orbits very close to its parent star and takes 82/3 days to complete an orbit.
This is likely to be a rocky planet, not a gas giant. If it had formed as a gas giant, it would have stayed that way.
If HD 69830 b is a terrestrial planet, models predict that tidal heating would produce a heat flux at the surface of about 55 W/m2. This is 20 times that of Io.
References
HD 69830 b Wikipedia(Text) CC BY-SA