Exoplanet · super-Earth
LHS 1140 b
LHS 1140 b is a super-Earth orbiting the star LHS 1140. Its year lasts 24.7 Earth days. It was discovered in 2017 by the Transit method.
| Host star | LHS 1140 |
|---|---|
| Distance | 48.9 light-years (15.0 pc) |
| Orbital period | 24.7 days |
| Orbital radius | 0.0946 AU |
| Eccentricity | 0.043 |
| Radius | 1.73 R⊕ · 0.154 R♃ |
| Mass | 5.6 M⊕ · 0.0176 M♃ |
| Density | 5.9 g/cm³ |
| Surface gravity | 1.87 × Earth |
| Equilibrium temperature | 226 K (-47 °C) |
| Stellar flux received | 0.43 × Earth |
| Discovery method | Transit |
| Discovery year | 2017 |
| Discovered by | MEarth Project |
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 1.2° across: 2.3 times the Sun as we see it from Earth.
In the sky
A telescope is needed to see it: its apparent magnitude is 14.20. Visible from the whole Southern Hemisphere and north to latitude 75° N. South of latitude 75° S it never sets. It stands highest at midnight in September, the best time to observe it.
Light's journey
The light you see tonight set out around the year 1977. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 867 thousand years.
Planets in the same system
- LHS 1140 c 3.78-day orbit · 1.27 R⊕
Data: NASA Exoplanet Archive, PSCompPars. Its look in the simulation is a rendering based on the measured radius, mass and temperature.