Exoplanet · mini-Neptune
LHS 3154 b
LHS 3154 b is a mini-Neptune orbiting the star LHS 3154. Its year lasts 3.72 Earth days. It was discovered in 2023 by the Radial Velocity method.
| Host star | LHS 3154 |
|---|---|
| Distance | 51.4 light-years (15.8 pc) |
| Orbital period | 3.72 days |
| Orbital radius | 0.0226 AU |
| Eccentricity | 0.076 |
| Radius | 3.69 R⊕ · 0.329 R♃ |
| Mass (minimum) | 13.2 M⊕ · 0.0414 M♃ |
| Density | 1.44 g/cm³ |
| Equilibrium temperature | 344 K (71 °C) |
| Stellar flux received | 3.71 × Earth |
| Discovery method | Radial Velocity |
| Discovery year | 2023 |
| Discovered by | McDonald Observatory |
Habitable zone
Inside the inner edge of the habitable zone: it receives 3.71 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 3.3° across: 6.2 times the Sun as we see it from Earth.
In the sky
A telescope is needed to see it: its apparent magnitude is 17.40. Visible from the whole Northern Hemisphere and south to latitude 49° S. North of latitude 49° N 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 1975. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 912 thousand years.
Data: NASA Exoplanet Archive, PSCompPars. Its look in the simulation is a rendering based on the measured radius, mass and temperature.