Exoplanet · gas giant
HD 32518 b
HD 32518 b is a gas giant orbiting the star Mago. Its year lasts 157 Earth days. It was discovered in 2009 by the Radial Velocity method.
| Host star | Mago |
|---|---|
| Distance | 398.3 light-years (122.1 pc) |
| Orbital period | 157 days |
| Orbital radius | 0.594 AU |
| Eccentricity | 0.028 |
| Radius | 13.2 R⊕ · 1.18 R♃ |
| Mass (minimum) | 905 M⊕ · 2.85 M♃ |
| Density | 2.16 g/cm³ |
| Equilibrium temperature | 916 K (643 °C) |
| Stellar flux received | 131 × Earth |
| Discovery method | Radial Velocity |
| Discovery year | 2009 |
| Discovered by | Thueringer Landessternwarte Tautenburg |
Habitable zone
Inside the inner edge of the habitable zone: it receives 131 times the light the Earth does, too hot to keep liquid water on its surface.
Its star in the sky
In the planet's sky its star is a disc 9.1° across: 17 times the Sun as we see it from Earth.
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 6.43). Visible from the whole Northern Hemisphere and south to latitude 20° S. North of latitude 20° N it never sets. It stands highest at midnight in December, the best time to observe it.
Light's journey
The light you see tonight set out around the year 1628. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 7.1 million years.
Data: NASA Exoplanet Archive, PSCompPars. Its look in the simulation is a rendering based on the measured radius, mass and temperature.