The Kepler-321 System
Kepler-321 is a planetary system in the constellation Cygnus hosting 2 confirmed exoplanets, about 1,254 light-years from Earth.
Size Comparison: The Planets of Kepler-321
Kepler-321: Star and Habitable Zone
Kepler-321
- Surface temperature
- 5,740 K (Sun: 5,772 K)
- Radius
- 1.19 R☉
Habitable zone of Kepler-321: 0.886–2.090 AU (conservative: 1.123–1.982 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-321 System
| Planet | Type | Orbit | Radius | ESI | Discovered |
|---|---|---|---|---|---|
| Kepler-321 b | Super Earth | 4.9 d | 1.77 R⊕ | 0.27 | 2014 |
| Kepler-321 c | Mini Neptune | 13 d | 2.32 R⊕ | 0.26 | 2014 |
Discovery History
The first planet found here, Kepler-321 b, was discovered in 2014 using the transit method.
- 2014 — Kepler-321 b (Transit)
- 2014 — Kepler-321 c (Transit)
Frequently Asked Questions About Kepler-321
How many planets does Kepler-321 have?
Kepler-321 has 2 confirmed exoplanets. More may await discovery.
Are any planets in the Kepler-321 system habitable?
None of the known planets in Kepler-321 orbit within the star's habitable zone.
How far away is Kepler-321?
Kepler-321 is about 1,254 light-years from Earth in the constellation Cygnus.
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