LHS 1903 d
A confirmed exoplanet orbiting LHS 1903.
Compared with Earth
- Size
- About 2.5 times Earth's width.
- Mass
- About 6 times Earth's mass.
- Temperature
- About 169 °C (336 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.
- Starlight
- About 6.4 times the starlight Earth gets from the Sun.
- Year
- A year here lasts about 13 Earth days.
Planet
- Radius
- 2.5 × Earth
- Mass
- 5.96 × Earth
- Density
- 2.09 g/cm³
- Equilibrium temperature
- 442 K
- Starlight received
- 6.35 × Earth
- Orbital period
- 12.57 days
- Average distance from its star
- 0.08604 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.