The star
The star
Kepler-206
- Type
- yellow star
- Surface
- ≈ 5,764 K
- Size
- 1.19 × the Sun
- Mass
- 0.96 × the Sun
- Brightness
- 1.21 × the Sun
- Habitable zone
- 0.827–1.95 AU
The planets
Kepler-206
Kepler-206 b
- Year
- 7.78 days
- Distance from star
- 0.078 AU
- Mass
- 1.9 Earths
- Size
- 1.2 × Earth
- Temperature
- ≈ 983 K (+710 °C)
- Found
- 2014, transit (Kepler)
Kepler-206
Kepler-206 c
- Year
- 13.14 days
- Distance from star
- 0.111 AU
- Mass
- 3.8 Earths
- Size
- 1.8 × Earth
- Temperature
- ≈ 825 K (+552 °C)
- Found
- 2014, transit (Kepler)
Kepler-206
Kepler-206 d
- Year
- 23.44 days
- Distance from star
- 0.163 AU
- Mass
- 1.8 Earths
- Size
- 1.2 × Earth
- Temperature
- ≈ 681 K (+408 °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.