The star
The star
Kepler-124
- Type
- orange dwarf
- Surface
- ≈ 4,984 K
- Size
- 0.64 × the Sun
- Mass
- 0.71 × the Sun
- Brightness
- 0.341 × the Sun
- Habitable zone
- 0.458–1.11 AU
The planets
Kepler-124
Kepler-124 b
- Year
- 3.41 days
- Distance from star
- 0.039 AU
- Mass
- 0.32 Earths
- Size
- 0.73 × Earth
- Temperature
- ≈ 892 K (+619 °C)
- Found
- 2014, transit (Kepler)
Kepler-124
Kepler-124 c
- Year
- 13.82 days
- Distance from star
- 0.1 AU
- Mass
- 3.7 Earths
- Size
- 1.8 × Earth
- Temperature
- ≈ 560 K (+287 °C)
- Found
- 2014, transit (Kepler)
Kepler-124
Kepler-124 d
- Year
- 30.95 days
- Distance from star
- 0.17 AU
- Mass
- 1.4 Earths
- Size
- 1.1 × Earth
- Temperature
- ≈ 428 K (+155 °C)
- Found
- 2014, transit (Kepler)
Masses found by the wobble method are minimums, because the orbit's tilt is unknown. Temperatures are equilibrium estimates for a bare planet, before any atmosphere.
How we know
The shadow
The planet passes in front of its star and dims it by a fraction of a percent, every orbit. The dip gives the planet's size and year.
Sources
- Planet and star parameters: NASA Exoplanet Archive, Planetary Systems Composite Parameters, retrieved 1 Nov 2026. This research has made use of the NASA Exoplanet Archive, which is operated by the California Institute of Technology, under contract with NASA under the Exoplanet Exploration Program.
- Position: HYG Database v4.1 (CC BY-SA 4.0).
- Habitable zone: a simple estimate from the star's brightness (√L × 0.95 to 1.67 AU), shown as a guide.