The Kepler-865 System
Kepler-865 is a planetary system in the constellation Cygnus hosting 2 confirmed exoplanets, about 1,912 light-years from Earth.
Size Comparison: The Planets of Kepler-865
Kepler-865: Star and Habitable Zone
Kepler-865
- Surface temperature
- 5,570 K (Sun: 5,772 K)
- Mass
- 0.93 M☉
- Radius
- 0.92 R☉
- Age
- 4.3 billion years (Sun: 4.6)
Habitable zone of Kepler-865: 0.650–1.539 AU (conservative: 0.823–1.460 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 Kepler-865 System
| Planet | Type | Orbit | Radius | ESI | Discovered |
|---|---|---|---|---|---|
| Kepler-865 b | Mini Neptune | 14 d | 2.49 R⊕ | 0.26 | 2016 |
| Kepler-865 c | Terrestrial | 6.2 d | 0.89 R⊕ | 0.30 | 2023 |
Discovery History
The first planet found here, Kepler-865 b, was discovered in 2016 using the transit method. The most recent addition, Kepler-865 c, followed in 2023.
- 2016 — Kepler-865 b (Transit)
- 2023 — Kepler-865 c (Transit)
Frequently Asked Questions About Kepler-865
How many planets does Kepler-865 have?
Kepler-865 has 2 confirmed exoplanets. More may await discovery.
Are any planets in the Kepler-865 system habitable?
None of the known planets in Kepler-865 orbit within the star's habitable zone.
How far away is Kepler-865?
Kepler-865 is about 1,912 light-years from Earth in the constellation Cygnus.
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