Exoplanet · Earth-sized rocky planet
LHS 1478 b
LHS 1478 b is a Earth-sized rocky planet orbiting the star LHS 1478. Its year lasts 1.95 Earth days. It was discovered in 2021 by the Transit method.
| Host star | LHS 1478 |
|---|---|
| Distance | 59.5 light-years (18.2 pc) |
| Orbital period | 46.8 hours |
| Orbital radius | 0.0187 AU |
| Eccentricity | 0.038 |
| Radius | 1.17 R⊕ · 0.105 R♃ |
| Mass | 2.27 M⊕ · 0.00714 M♃ |
| Density | 7.7 g/cm³ |
| Surface gravity | 1.65 × Earth |
| Equilibrium temperature | 597 K (324 °C) |
| Stellar flux received | 20.9 × Earth |
| Discovery method | Transit |
| Discovery year | 2021 |
| Discovered by | Transiting Exoplanet Survey Satellite (TESS) |
Habitable zone
Inside the inner edge of the habitable zone: it receives 20.9 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 7° across: 13 times the Sun as we see it from Earth.
In the sky
A telescope is needed to see it: its apparent magnitude is 13.39. Visible from the whole Northern Hemisphere and south to latitude 13° S. North of latitude 13° N it never sets.
Light's journey
The light you see tonight set out around the year 1967. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.1 million years.
Data: NASA Exoplanet Archive, PSCompPars. Its look in the simulation is a rendering based on the measured radius, mass and temperature.