The Kepler-123 System
Kepler-123 is a planetary system in the constellation Cygnus hosting 2 confirmed exoplanets, about 3,332 light-years from Earth.
Size Comparison: The Planets of Kepler-123
Kepler-123: Star and Habitable Zone
Kepler-123
- Surface temperature
- 6,089 K (Sun: 5,772 K)
- Radius
- 1.26 R☉
Habitable zone of Kepler-123: 1.034–2.417 AU (conservative: 1.309–2.292 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-123 System
| Planet | Type | Orbit | Radius | ESI | Discovered |
|---|---|---|---|---|---|
| Kepler-123 b | Mini Neptune | 17 d | 2.94 R⊕ | 0.22 | 2014 |
| Kepler-123 c | Super Earth | 27 d | 1.48 R⊕ | 0.30 | 2014 |
Discovery History
The first planet found here, Kepler-123 b, was discovered in 2014 using the transit method.
- 2014 — Kepler-123 b (Transit)
- 2014 — Kepler-123 c (Transit)
Frequently Asked Questions About Kepler-123
How many planets does Kepler-123 have?
Kepler-123 has 2 confirmed exoplanets. More may await discovery.
Are any planets in the Kepler-123 system habitable?
None of the known planets in Kepler-123 orbit within the star's habitable zone.
How far away is Kepler-123?
Kepler-123 is about 3,332 light-years from Earth in the constellation Cygnus.
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