The LP 791-18 System
LP 791-18 is a planetary system in the constellation Crater hosting 3 confirmed exoplanets, about 86 light-years from Earth.
Size Comparison: The Planets of LP 791-18
LP 791-18: Star and Habitable Zone
LP 791-18
- Spectral type
- M(6.1 +/- 0.7) V
- Surface temperature
- 2,960 K (Sun: 5,772 K)
- Mass
- 0.14 M☉
- Radius
- 0.18 R☉
- Luminosity
- 0.0023 L☉
- Age
- 0.5 billion years (Sun: 4.6)
Habitable zone of LP 791-18: 0.039–0.105 AU (conservative: 0.050–0.100 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 LP 791-18 System
| Planet | Type | Orbit | Radius | ESI | Discovered |
|---|---|---|---|---|---|
| LP 791-18 b | Terrestrial | 0.9 d | 1.21 R⊕ | 0.35 | 2019 |
| LP 791-18 c | Mini Neptune | 5.0 d | 2.49 R⊕ | 0.57 | 2019 |
| LP 791-18 d | Terrestrial | 2.8 d | 1.03 R⊕ | 0.50 | 2023 |
Discovery History
The first planet found here, LP 791-18 b, was discovered in 2019 using the transit method. The most recent addition, LP 791-18 d, followed in 2023.
- 2019 — LP 791-18 b (Transit)
- 2019 — LP 791-18 c (Transit)
- 2023 — LP 791-18 d (Transit)
Frequently Asked Questions About LP 791-18
How many planets does LP 791-18 have?
LP 791-18 has 3 confirmed exoplanets. More may await discovery.
Are any planets in the LP 791-18 system habitable?
None of the known planets in LP 791-18 orbit within the star's habitable zone.
How far away is LP 791-18?
LP 791-18 is about 86 light-years from Earth in the constellation Crater.
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