Exoplanet · gas giant
16 Cyg B b
16 Cyg B b is a gas giant orbiting the star 16 Cyg B. Its year lasts 799 Earth days. It was discovered in 1996 by the Radial Velocity method.
| Host star | 16 Cyg B |
|---|---|
| Distance | 68.9 light-years (21.1 pc) |
| Orbital period | 2.19 years |
| Orbital radius | 1.66 AU |
| Eccentricity | 0.680 |
| Radius | 13.5 R⊕ · 1.2 R♃ |
| Mass (minimum) | 566 M⊕ · 1.78 M♃ |
| Density | 1.26 g/cm³ |
| Equilibrium temperature | 229 K (-44 °C) |
| Stellar flux received | 0.454 × Earth |
| Discovery method | Radial Velocity |
| Discovery year | 1996 |
| Discovered by | Multiple Observatories |
Habitable zone
Inside its star's habitable zone: it receives enough light for liquid water to exist on its surface under a suitable atmosphere.
Its star in the sky
In the planet's sky its star is a disc 0.36° across: 0.68 times the Sun as we see it from Earth.
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 6.25). 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 July, the best time to observe it.
Light's journey
The light you see tonight set out around the year 1957. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.2 million years.
Data: NASA Exoplanet Archive, PSCompPars. Its look in the simulation is a rendering based on the measured radius, mass and temperature.