The star
The star
Kepler-11
- Type
- yellow star
- Surface
- ≈ 5,663 K
- Size
- 1.06 × the Sun
- Mass
- 0.96 × the Sun
- Brightness
- 1.32 × the Sun
- Habitable zone
- 0.868–2.05 AU
The planets
Kepler-11
Kepler-11 b
- Year
- 10.30 days
- Distance from star
- 0.091 AU
- Mass
- 1.9 Earths
- Size
- 1.8 × Earth
- Temperature
- ≈ 849 K (+576 °C)
- Found
- 2010, transit (Kepler)
Kepler-11
Kepler-11 c
- Year
- 13.02 days
- Distance from star
- 0.107 AU
- Mass
- 2.9 Earths
- Size
- 2.9 × Earth
- Temperature
- ≈ 786 K (+513 °C)
- Found
- 2010, transit (Kepler)
Kepler-11
Kepler-11 d
- Year
- 22.68 days
- Distance from star
- 0.155 AU
- Mass
- 7.3 Earths
- Size
- 3.1 × Earth
- Temperature
- ≈ 653 K (+380 °C)
- Found
- 2010, transit (Kepler)
Kepler-11
Kepler-11 e
- Year
- 32.00 days
- Distance from star
- 0.195 AU
- Mass
- 8 Earths
- Size
- 4.2 × Earth
- Temperature
- ≈ 582 K (+309 °C)
- Found
- 2010, transit (Kepler)
Kepler-11
Kepler-11 f
- Year
- 46.69 days
- Distance from star
- 0.25 AU
- Mass
- 2 Earths
- Size
- 2.5 × Earth
- Temperature
- ≈ 513 K (+240 °C)
- Found
- 2010, transit (Kepler)
Kepler-11
Kepler-11 g
- Year
- 118.38 days
- Distance from star
- 0.466 AU
- Mass
- 25 Earths
- Size
- 3.3 × Earth
- Temperature
- ≈ 376 K (+103 °C)
- Found
- 2010, 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.