LHS 1903 b
A confirmed exoplanet orbiting LHS 1903.
Compared with Earth
- Size
- About 1.4 times Earth's width.
- Mass
- About 3.3 times Earth's mass.
- Temperature
- About 523 °C (973 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.
- Starlight
- About 67 times the starlight Earth gets from the Sun.
- Year
- A year here lasts about 2.2 Earth days.
Planet
- Radius
- 1.382 × Earth
- Mass
- 3.28 × Earth
- Density
- 6.82 g/cm³
- Equilibrium temperature
- 796 K
- Starlight received
- 66.66 × Earth
- Orbital period
- 2.156 days
- Average distance from its star
- 0.02656 AU
Star
- Host star
- LHS 1903
- Spectral class
- M — red dwarf
- Surface temperature
- 3,664 K
- Radius
- 0.539 × Sun
- Mass
- 0.538 × Sun
- Age
- 7.08 billion years
System
- Distance from Earth
- 116.4 light-years (35.69 parsecs)
- Stars in system
- 1
- Known planets
- 4
Discovery
- Year
- 2026
- Method
- Transit
- Facility
- Transiting Exoplanet Survey Satellite (TESS)
Data from the NASA Exoplanet Archive, synced October 14, 2026.