Exoplanet · gas giant
HD 80606 b
HD 80606 b is a gas giant orbiting the star HD 80606. Its year lasts 111 Earth days. It was discovered in 2001 by the Radial Velocity method.
| Host star | HD 80606 |
|---|---|
| Distance | 216.8 light-years (66.5 pc) |
| Orbital period | 111 days |
| Orbital radius | 0.46 AU |
| Eccentricity | 0.932 |
| Radius | 11.6 R⊕ · 1.03 R♃ |
| Mass | 1,320 M⊕ · 4.16 M♃ |
| Density | 5.08 g/cm³ |
| Surface gravity | 9.89 × Earth |
| Equilibrium temperature | 405 K (132 °C) |
| Stellar flux received | 4.69 × Earth |
| Discovery method | Radial Velocity |
| Discovery year | 2001 |
| Discovered by | Multiple Observatories |
Habitable zone
Inside the inner edge of the habitable zone: it receives 4.69 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 1.2° across: 2.3 times the Sun as we see it from Earth.
In the sky
A telescope is needed to see it: its apparent magnitude is 9.06. Visible from the whole Northern Hemisphere and south to latitude 39° S. North of latitude 39° N it never sets. It stands highest at midnight in February, the best time to observe it.
Light's journey
The light you see tonight set out around the year 1809. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.8 million years.
Data: NASA Exoplanet Archive, PSCompPars. Its look in the simulation is a rendering based on the measured radius, mass and temperature.