The TOI-261 System
TOI-261 is a planetary system in the constellation Cetus hosting 2 confirmed exoplanets, about 373 light-years from Earth.
Size Comparison: The Planets of TOI-261
TOI-261: Star and Habitable Zone
TOI-261
- Surface temperature
- 5,890 K (Sun: 5,772 K)
- Mass
- 0.50 M☉
- Radius
- 1.28 R☉
Habitable zone of TOI-261: 0.992–2.330 AU (conservative: 1.256–2.209 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-261 System
| Planet | Type | Orbit | Radius | ESI | Discovered |
|---|---|---|---|---|---|
| TOI-261.01 | Sub Neptune | 3.4 d | 3.04 R⊕ | — | 2021 |
| TOI-261.02 | Sub Neptune | 13 d | 3.35 R⊕ | — | 2021 |
Discovery History
The first planet found here, TOI-261.01, was discovered in 2021 using the transit method.
- 2021 — TOI-261.01 (Transit)
- 2021 — TOI-261.02 (Transit)
Frequently Asked Questions About TOI-261
How many planets does TOI-261 have?
TOI-261 has 2 confirmed exoplanets. More may await discovery.
Are any planets in the TOI-261 system habitable?
None of the known planets in TOI-261 orbit within the star's habitable zone.
How far away is TOI-261?
TOI-261 is about 373 light-years from Earth in the constellation Cetus.
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