The LHS 1903 System
LHS 1903 is a planetary system in the constellation Lynx hosting 4 confirmed exoplanets, about 116 light-years from Earth.
Size Comparison: The Planets of LHS 1903
LHS 1903: Star and Habitable Zone
LHS 1903
- Spectral type
- M
- Surface temperature
- 3,664 K (Sun: 5,772 K)
- Mass
- 0.54 M☉
- Radius
- 0.54 R☉
- Age
- 7.1 billion years (Sun: 4.6)
Habitable zone of LHS 1903: 0.177–0.455 AU (conservative: 0.224–0.432 AU), per Kopparapu et al. (2014). Earth orbits the Sun at 1 AU.
See the full interactive habitable-zone view in the Exoplanet Explorer app ›
All 4 Planets in the LHS 1903 System
| Planet | Type | Orbit | Radius | ESI | Discovered |
|---|---|---|---|---|---|
| LHS 1903 b | Super Earth | 2.2 d | 1.38 R⊕ | — | 2026 |
| LHS 1903 c | Mini Neptune | 6.2 d | 2.05 R⊕ | — | 2026 |
| LHS 1903 d | Mini Neptune | 13 d | 2.50 R⊕ | — | 2026 |
| LHS 1903 e | Super Earth | 29 d | 1.73 R⊕ | — | 2026 |
Discovery History
The first planet found here, LHS 1903 b, was discovered in 2026 using the transit method.
- 2026 — LHS 1903 b (Transit)
- 2026 — LHS 1903 c (Transit)
- 2026 — LHS 1903 d (Transit)
- 2026 — LHS 1903 e (Transit)
Frequently Asked Questions About LHS 1903
How many planets does LHS 1903 have?
LHS 1903 has 4 confirmed exoplanets. More may await discovery.
Are any planets in the LHS 1903 system habitable?
None of the known planets in LHS 1903 orbit within the star's habitable zone.
How far away is LHS 1903?
LHS 1903 is about 116 light-years from Earth in the constellation Lynx.
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