LHS 1140 b
A confirmed exoplanet orbiting LHS 1140.
Compared with Earth
- Size
- About 1.7 times Earth's width.
- Mass
- About 5.6 times Earth's mass.
- Temperature
- About -47 °C (-53 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.
- Starlight
- About 43% of the starlight Earth gets from the Sun.
- Year
- A year here lasts about 25 Earth days.
Planet
- Radius
- 1.73 × Earth
- Mass
- 5.6 × Earth
- Density
- 5.9 g/cm³
- Equilibrium temperature
- 226 K
- Starlight received
- 0.43 × Earth
- Orbital period
- 24.74 days
- Average distance from its star
- 0.0946 AU
Star
- Host star
- LHS 1140
- Spectral class
- M — red dwarf
- Surface temperature
- 3,096 K
- Radius
- 0.2159 × Sun
- Mass
- 0.1844 × Sun
- Age
- 5 billion years
System
- Distance from Earth
- 48.88 light-years (14.99 parsecs)
- Stars in system
- 1
- Known planets
- 2
Discovery
- Year
- 2017
- Method
- Transit
- Facility
- MEarth Project
Data from the NASA Exoplanet Archive, synced October 14, 2026.