The LHS 1678 System
LHS 1678 is a planetary system in the constellation Caelum hosting 3 confirmed exoplanets around 2 stars, about 65 light-years from Earth.
Size Comparison: The Planets of LHS 1678
Star LHS 1678 and Its Habitable Zone
LHS 1678
- Spectral type
- M2.0 V
- Surface temperature
- 3,490 K (Sun: 5,772 K)
- Mass
- 0.35 M☉
- Radius
- 0.33 R☉
- Luminosity
- 0.0145 L☉
- Age
- 7.0 billion years (Sun: 4.6)
Habitable zone of LHS 1678: 0.099–0.256 AU (conservative: 0.125–0.242 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 3 Planets in the LHS 1678 System
| Planet | Type | Orbit | Radius | ESI | Discovered |
|---|---|---|---|---|---|
| LHS 1678 b | Terrestrial | 0.9 d | 0.69 R⊕ | 0.30 | 2021 |
| LHS 1678 c | Terrestrial | 3.7 d | 0.94 R⊕ | 0.39 | 2021 |
| LHS 1678 d | Terrestrial | 5.0 d | 0.98 R⊕ | 0.43 | 2024 |
Discovery History
The first planet found here, LHS 1678 b, was discovered in 2021 using the transit method. The most recent addition, LHS 1678 d, followed in 2024.
- 2021 — LHS 1678 b (Transit)
- 2021 — LHS 1678 c (Transit)
- 2024 — LHS 1678 d (Transit)
Frequently Asked Questions About LHS 1678
How many planets does LHS 1678 have?
LHS 1678 has 3 confirmed exoplanets distributed around its 2 stars. More may await discovery.
Are any planets in the LHS 1678 system habitable?
None of the known planets in LHS 1678 orbit within the star's habitable zone.
How far away is LHS 1678?
LHS 1678 is about 65 light-years from Earth in the constellation Caelum.
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