Exoplanet · super-Earth
Kepler-442 b
Kepler-442 b is a super-Earth orbiting the star Kepler-442. Its year lasts 112 Earth days. It was discovered in 2015 by the Transit method.
| Host star | Kepler-442 |
|---|---|
| Distance | 1,194 light-years (366.0 pc) |
| Orbital period | 112 days |
| Orbital radius | 0.409 AU |
| Eccentricity | 0.040 |
| Radius | 1.34 R⊕ · 0.12 R♃ |
| Mass | 2.36 M⊕ · 0.00743 M♃ (estimated from the radius) |
| Density | 5.39 g/cm³ |
| Equilibrium temperature | 241 K (-32 °C) |
| Stellar flux received | 0.66 × Earth |
| Discovery method | Transit |
| Discovery year | 2015 |
| Discovered by | Kepler |
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 0.78° across: 1.5 times the Sun as we see it from Earth.
In the sky
A telescope is needed to see it: its apparent magnitude is 15.32. Visible from the whole Northern Hemisphere and south to latitude 51° S. North of latitude 51° 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 832. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 21 million years.
Data: NASA Exoplanet Archive, PSCompPars. Its look in the simulation is a rendering based on the measured radius, mass and temperature.