The Kepler-129 System
Kepler-129 is a planetary system in the constellation Draco hosting 3 confirmed exoplanets, about 1,334 light-years from Earth.
Size Comparison: The Planets of Kepler-129
Planets without a measured radius are not shown.
Kepler-129: Star and Habitable Zone
Kepler-129
- Spectral type
- G4 V
- Surface temperature
- 5,770 K (Sun: 5,772 K)
- Mass
- 1.18 M☉
- Radius
- 1.65 R☉
- Age
- 6.4 billion years (Sun: 4.6)
Habitable zone of Kepler-129: 1.238–2.917 AU (conservative: 1.568–2.765 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 Kepler-129 System
| Planet | Type | Orbit | Radius | ESI | Discovered |
|---|---|---|---|---|---|
| Kepler-129 b | Super Earth | 16 d | 2.40 R⊕ | 0.24 | 2014 |
| Kepler-129 c | Super Earth | 82 d | 2.52 R⊕ | 0.29 | 2014 |
| Kepler-129 d | Cold Gas Giant | 2,646 d | — | 0.22 | 2021 |
Discovery History
The first planet found here, Kepler-129 b, was discovered in 2014 using the transit method. The most recent addition, Kepler-129 d, followed in 2021.
- 2014 — Kepler-129 b (Transit)
- 2014 — Kepler-129 c (Transit)
- 2021 — Kepler-129 d (Radial Velocity)
Frequently Asked Questions About Kepler-129
How many planets does Kepler-129 have?
Kepler-129 has 3 confirmed exoplanets. More may await discovery.
Are any planets in the Kepler-129 system habitable?
None of the known planets in Kepler-129 orbit within the star's habitable zone.
How far away is Kepler-129?
Kepler-129 is about 1,334 light-years from Earth in the constellation Draco.
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