The KOI-134 System
KOI-134 is a planetary system in the constellation Cygnus hosting 2 confirmed exoplanets, about 3,781 light-years from Earth.
Size Comparison: The Planets of KOI-134
Planets without a measured radius are not shown.
KOI-134: Star and Habitable Zone
KOI-134
- Spectral type
- F9V
- Surface temperature
- 6,160 K (Sun: 5,772 K)
- Mass
- 1.41 M☉
- Radius
- 1.67 R☉
- Luminosity
- 4.2000 L☉
Habitable zone of KOI-134: 1.503–3.509 AU (conservative: 1.903–3.327 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 KOI-134 System
Discovery History
The first planet found here, KOI-134 b, was discovered in 2025 using the transit method.
Frequently Asked Questions About KOI-134
How many planets does KOI-134 have?
KOI-134 has 2 confirmed exoplanets. More may await discovery.
Are any planets in the KOI-134 system habitable?
None of the known planets in KOI-134 orbit within the star's habitable zone.
How far away is KOI-134?
KOI-134 is about 3,781 light-years from Earth in the constellation Cygnus.
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