Exoplanet · gas giant
11 UMi b
11 UMi b is a gas giant orbiting the star 11 UMi. Its year lasts 516 Earth days. It was discovered in 2009 by the Radial Velocity method.
| Host star | 11 UMi |
|---|---|
| Distance | 408.7 light-years (125.3 pc) |
| Orbital period | 516 days |
| Orbital radius | 1.53 AU |
| Eccentricity | 0.080 |
| Radius | 12.3 R⊕ · 1.1 R♃ |
| Mass (minimum) | 4,680 M⊕ · 14.7 M♃ |
| Density | 13.8 g/cm³ |
| Equilibrium temperature | 896 K (623 °C) |
| Stellar flux received | 115 × 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 115 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 10° across: 19 times the Sun as we see it from Earth.
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.02). Visible from the whole Northern Hemisphere and south to latitude 18° S. North of latitude 18° N it never sets. It stands highest at midnight in May, the best time to observe it.
Light's journey
The light you see tonight set out around the year 1617. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 7.3 million years.
Data: NASA Exoplanet Archive, PSCompPars. Its look in the simulation is a rendering based on the measured radius, mass and temperature.