Exoplanet · gas giant
b Cen AB b
b Cen AB b is a gas giant orbiting the star b Cen A. Its year lasts 1.79 × 10⁶ Earth days. It was discovered in 2021 by the Imaging method.
| Host star | b Cen A |
|---|---|
| Distance | 319.9 light-years (98.1 pc) |
| Orbital period | 4,900 years |
| Orbital radius | 556 AU |
| Eccentricity | 0.400 |
| Radius | 12.4 R⊕ · 1.11 R♃ |
| Mass | 3,460 M⊕ · 10.9 M♃ |
| Density | 9.98 g/cm³ |
| Surface gravity | 22.5 × Earth |
| Discovery method | Imaging |
| Discovery year | 2021 |
| Discovered by | Paranal Observatory |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 4.01). Visible from the whole Southern Hemisphere and north to latitude 52° N. South of latitude 52° S it never sets. It stands highest at midnight in April, the best time to observe it.
Light's journey
The light you see tonight set out around the year 1706. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 5.7 million years.
Data: NASA Exoplanet Archive, PSCompPars. Its look in the simulation is a rendering based on the measured radius, mass and temperature.