Exoplanet · super-Earth
K2-408 b
K2-408 b is a super-Earth orbiting the star K2-408. Its year lasts 21 Earth days. It was discovered in 2022 by the Transit method.
| Host star | K2-408 |
|---|---|
| Distance | 529.4 light-years (162.3 pc) |
| Orbital period | 21 days |
| Radius | 1.68 R⊕ · 0.15 R♃ |
| Mass | 3.45 M⊕ · 0.0109 M♃ (estimated from the radius) |
| Density | 4.02 g/cm³ |
| Discovery method | Transit |
| Discovery year | 2022 |
| Discovered by | K2 |
In the sky
A telescope is needed to see it: its apparent magnitude is 12.06. Visible from the whole Southern Hemisphere and north to latitude 72° N. South of latitude 72° S 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 1497. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 9.4 million years.
Data: NASA Exoplanet Archive, PSCompPars. Its look in the simulation is a rendering based on the measured radius, mass and temperature.