Exoplanet · gas giant
HD 10647 b
HD 10647 b is a gas giant orbiting the star HD 10647. Its year lasts 989 Earth days. It was discovered in 2006 by the Radial Velocity method.
| Host star | HD 10647 |
|---|---|
| Distance | 56.5 light-years (17.3 pc) |
| Orbital period | 2.71 years |
| Orbital radius | 2.02 AU |
| Eccentricity | 0.150 |
| Radius | 13.8 R⊕ · 1.23 R♃ |
| Mass (minimum) | 299 M⊕ · 0.94 M♃ |
| Density | 0.625 g/cm³ |
| Equilibrium temperature | 222 K (-52 °C) |
| Stellar flux received | 0.347 × Earth |
| Discovery method | Radial Velocity |
| Discovery year | 2006 |
| Discovered by | W. M. Keck Observatory |
Habitable zone
At the edge of the habitable zone (within the optimistic limits): liquid water would be possible only with a favourable atmosphere.
Its star in the sky
In the planet's sky its star is a disc 0.29° across: 0.55 times the Sun as we see it from Earth.
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.52). Visible from the whole Southern Hemisphere and north to latitude 36° N. South of latitude 36° S it never sets. It stands highest at midnight in October, the best time to observe it.
Light's journey
The light you see tonight set out around the year 1969. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.0 million years.
Data: NASA Exoplanet Archive, PSCompPars. Its look in the simulation is a rendering based on the measured radius, mass and temperature.