The star
The star
Kepler-411
- Type
- K2 V
- Surface
- ≈ 4,974 K
- Size
- 0.82 × the Sun
- Mass
- 0.87 × the Sun
- Brightness
- 0.264 × the Sun
- Habitable zone
- 0.403–0.975 AU
The planets
Kepler-411
Kepler-411 b
- Year
- 3.01 days
- Distance from star
- 0.0375 AU
- Mass
- 26 Earths
- Size
- 2.4 × Earth
- Temperature
- ≈ 1138 K (+865 °C)
- Found
- 2013, transit (Kepler)
Kepler-411
Kepler-411 c
- Year
- 7.83 days
- Distance from star
- 0.0739 AU
- Mass
- 26 Earths
- Size
- 4.4 × Earth
- Temperature
- ≈ 838 K (+565 °C)
- Found
- 2016, transit (Kepler)
Kepler-411
Kepler-411 e
- Year
- 31.51 days
- Distance from star
- 0.186 AU
- Mass
- 11 Earths
- Size
- 3.3 × Earth
- Temperature
- ≈ 503 K (+230 °C)
- Found
- 2018, transit timing variations (Kepler)
Kepler-411
Kepler-411 d
- Year
- 58.02 days
- Distance from star
- 0.279 AU
- Mass
- 15 Earths
- Size
- 3.3 × Earth
- Temperature
- ≈ 410 K (+137 °C)
- Found
- 2018, 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.
Early and late
A known planet arrives early or late for its transits, betraying the pull of another, unseen planet.
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.