The TOI-771 System
TOI-771 is a planetary system in the constellation Carina hosting 2 confirmed exoplanets, about 82 light-years from Earth.
Size Comparison: The Planets of TOI-771
Planets without a measured radius are not shown.
TOI-771: Star and Habitable Zone
TOI-771
- Spectral type
- M3
- Surface temperature
- 3,370 K (Sun: 5,772 K)
- Mass
- 0.22 M☉
- Radius
- 0.23 R☉
- Luminosity
- 0.0063 L☉
Habitable zone of TOI-771: 0.065–0.169 AU (conservative: 0.082–0.160 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 2 Planets in the TOI-771 System
Discovery History
The first planet found here, TOI-771 b, was discovered in 2024 using the transit method. The most recent addition, TOI-771 c, followed in 2025.
Frequently Asked Questions About TOI-771
How many planets does TOI-771 have?
TOI-771 has 2 confirmed exoplanets. More may await discovery.
Are any planets in the TOI-771 system habitable?
None of the known planets in TOI-771 orbit within the star's habitable zone.
How far away is TOI-771?
TOI-771 is about 82 light-years from Earth in the constellation Carina.
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