Exoplanet · gas giant
WASP-108 b
WASP-108 b is a gas giant orbiting the star WASP-108. Its year lasts 2.68 Earth days. It was discovered in 2020 by the Transit method.
| Host star | WASP-108 |
|---|---|
| Distance | 844.0 light-years (258.8 pc) |
| Orbital period | 2.68 days |
| Eccentricity | 0.000 |
| Radius | 15.1 R⊕ · 1.35 R♃ |
| Mass | 284 M⊕ · 0.892 M♃ |
| Density | 0.477 g/cm³ |
| Surface gravity | 1.24 × Earth |
| Equilibrium temperature | 1,589 K (1,316 °C) |
| Stellar flux received | 1,360 × Earth |
| Discovery method | Transit |
| Discovery year | 2020 |
| Discovered by | Transiting Exoplanet Survey Satellite (TESS) |
Habitable zone
Inside the inner edge of the habitable zone: it receives 1,360 times the light the Earth does, too hot to keep liquid water on its surface.
In the sky
A telescope is needed to see it: its apparent magnitude is 11.28. Visible from the whole Southern Hemisphere and north to latitude 40° N. South of latitude 40° 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 1182. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 15 million years.
Data: NASA Exoplanet Archive, PSCompPars. Its look in the simulation is a rendering based on the measured radius, mass and temperature.