Exoplanet · super-Earth
EPIC 211822797 b
EPIC 211822797 b is a super-Earth orbiting the star EPIC 211822797. Its year lasts 21.2 Earth days. It was discovered in 2016 by the Transit method.
| Host star | EPIC 211822797 |
|---|---|
| Distance | 607.3 light-years (186.2 pc) |
| Orbital period | 21.2 days |
| Orbital radius | 0.12 AU |
| Eccentricity | 0.060 |
| Radius | 1.92 R⊕ · 0.171 R♃ |
| Mass | 4.35 M⊕ · 0.0137 M♃ (estimated from the radius) |
| Density | 3.38 g/cm³ |
| Equilibrium temperature | 431 K (158 °C) |
| Stellar flux received | 3.5 × Earth |
| Discovery method | Transit |
| Discovery year | 2016 |
| Discovered by | K2 |
Habitable zone
Inside the inner edge of the habitable zone: it receives 3.5 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 2.6° across: 4.9 times the Sun as we see it from Earth.
In the sky
A telescope is needed to see it: its apparent magnitude is 15.13. Visible from the whole Northern Hemisphere and south to latitude 72° S. North of latitude 72° N it never sets. It stands highest at midnight in January, the best time to observe it.
Light's journey
The light you see tonight set out around the year 1419. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 11 million years.
Data: NASA Exoplanet Archive, PSCompPars. Its look in the simulation is a rendering based on the measured radius, mass and temperature.