The star
The star
KOI-7892
- Type
- white star
- Surface
- ≈ 6,474 K
- Size
- 1.24 × the Sun
- Mass
- 1.15 × the Sun
- Brightness
- 1.99 × the Sun
- Habitable zone
- 1.01–2.36 AU
The planets
KOI-7892
Kepler-457 d
- Year
- 10.69 days
- Distance from star
- 0.0996 AU
- Mass
- 9.2 Earths
- Size
- 3 × Earth
- Temperature
- ≈ 1008 K (+735 °C)
- Found
- 2021, transit (Kepler)
KOI-7892
KIC 8540376 b
- Year
- 31.81 days
- Distance from star
- 0.206 AU
- Mass
- 16 Earths
- Size
- 4.1 × Earth
- Found
- 2015, transit (Kepler)
KOI-7892
KIC 8540376 c
- Year
- 75.20 days
- Distance from star
- 0.365 AU
- Mass
- 6.3 Earths
- Size
- 2.4 × Earth
- Found
- 2015, 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.