The K2-157 System
K2-157 is a planetary system in the constellation Virgo hosting 3 confirmed exoplanets, about 973 light-years from Earth.
Size Comparison: The Planets of K2-157
Planets without a measured radius are not shown.
K2-157: Star and Habitable Zone
K2-157
- Spectral type
- G9 V
- Surface temperature
- 5,334 K (Sun: 5,772 K)
- Mass
- 0.89 M☉
- Radius
- 0.86 R☉
- Age
- 8.8 billion years (Sun: 4.6)
Habitable zone of K2-157: 0.564–1.348 AU (conservative: 0.715–1.278 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 K2-157 System
Discovery History
The first planet found here, K2-157 b, was discovered in 2018 using the transit method. The most recent addition, K2-157 d, followed in 2025.
Frequently Asked Questions About K2-157
How many planets does K2-157 have?
K2-157 has 3 confirmed exoplanets. More may await discovery.
Are any planets in the K2-157 system habitable?
None of the known planets in K2-157 orbit within the star's habitable zone.
How far away is K2-157?
K2-157 is about 973 light-years from Earth in the constellation Virgo.
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