The K2-239 System
K2-239 is a planetary system in the constellation Sextans hosting 3 confirmed exoplanets, about 101 light-years from Earth.
Size Comparison: The Planets of K2-239
K2-239: Star and Habitable Zone
K2-239
- Spectral type
- M3.0 V
- Surface temperature
- 3,420 K (Sun: 5,772 K)
- Mass
- 0.40 M☉
- Radius
- 0.36 R☉
- Luminosity
- 0.0160 L☉
Habitable zone of K2-239: 0.104–0.270 AU (conservative: 0.131–0.256 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 K2-239 System
Discovery History
The first planet found here, K2-239 b, was discovered in 2018 using the transit method.
Frequently Asked Questions About K2-239
How many planets does K2-239 have?
K2-239 has 3 confirmed exoplanets. More may await discovery.
Are any planets in the K2-239 system habitable?
None of the known planets in K2-239 orbit within the star's habitable zone.
How far away is K2-239?
K2-239 is about 101 light-years from Earth in the constellation Sextans.
Explore the K2-239 system in the app
Browse, filter and compare 6,000+ exoplanets on iPhone, iPad and Apple Watch — with habitable-zone views, widgets and offline data.
