The TOI-700 System
TOI-700 is a planetary system in the constellation Dorado hosting 4 confirmed exoplanets, about 102 light-years from Earth. 2 of its planets orbit within the habitable zone, where liquid water could exist on a planetary surface.
Size Comparison: The Planets of TOI-700
TOI-700: Star and Habitable Zone
TOI-700
- Spectral type
- M2.5 V
- Surface temperature
- 3,459 K (Sun: 5,772 K)
- Mass
- 0.42 M☉
- Radius
- 0.42 R☉
- Luminosity
- 0.0229 L☉
Habitable zone of TOI-700: 0.124–0.322 AU (conservative: 0.157–0.305 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 TOI-700 System
Discovery History
The first planet found here, TOI-700 b, was discovered in 2020 using the transit method. The most recent addition, TOI-700 e, followed in 2023.
Frequently Asked Questions About TOI-700
How many planets does TOI-700 have?
TOI-700 has 4 confirmed exoplanets. More may await discovery.
Are any planets in the TOI-700 system habitable?
2 planets in the system orbit within the habitable zone, where liquid water could exist. Actual habitability depends on atmospheres and composition, which are not yet known.
How far away is TOI-700?
TOI-700 is about 102 light-years from Earth in the constellation Dorado.
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