The star
The star
KOI-351
- Type
- white star
- Surface
- ≈ 6,031 K
- Size
- 1.19 × the Sun
- Mass
- 1.24 × the Sun
- Brightness
- 1.86 × the Sun
- Habitable zone
- 1.01–2.36 AU
The planets
KOI-351
KOI-351 b
- Year
- 7.01 days
- Distance from star
- 0.074 AU
- Mass
- 2.3 Earths
- Size
- 1.3 × Earth
- Temperature
- ≈ 1062 K (+789 °C)
- Found
- 2013, transit (Kepler)
KOI-351
KOI-351 c
- Year
- 8.72 days
- Distance from star
- 0.089 AU
- Mass
- 1.8 Earths
- Size
- 1.2 × Earth
- Temperature
- ≈ 987 K (+714 °C)
- Found
- 2013, transit (Kepler)
KOI-351
Kepler-90 i
- Year
- 14.45 days
- Distance from star
- 0.12 AU
- Mass
- 2.3 Earths
- Size
- 1.3 × Earth
- Temperature
- ≈ 709 K (+436 °C)
- Found
- 2017, transit (Kepler)
KOI-351
KOI-351 d
- Year
- 59.74 days
- Distance from star
- 0.32 AU
- Mass
- 8.6 Earths
- Size
- 2.9 × Earth
- Temperature
- ≈ 520 K (+247 °C)
- Found
- 2013, transit (Kepler)
KOI-351
KOI-351 e
- Year
- 91.94 days
- Distance from star
- 0.42 AU
- Mass
- 7.6 Earths
- Size
- 2.7 × Earth
- Temperature
- ≈ 450 K (+177 °C)
- Found
- 2013, transit (Kepler)
KOI-351
KOI-351 f
- Year
- 124.91 days
- Distance from star
- 0.48 AU
- Mass
- 8.7 Earths
- Size
- 2.9 × Earth
- Temperature
- ≈ 407 K (+134 °C)
- Found
- 2013, transit (Kepler)
KOI-351
KOI-351 g
- Year
- 210.74 days
- Distance from star
- 0.717 AU
- Mass
- 15 Earths
- Size
- 7.7 × Earth
- Temperature
- ≈ 342 K (+69 °C)
- Found
- 2013, transit (Kepler)
KOI-351
KOI-351 h
- Year
- 331.60 days
- Distance from star
- 0.971 AU
- Mass
- 2e+02 Earths
- Size
- 11 × Earth
- Temperature
- ≈ 294 K (+21 °C)
- Found
- 2013, 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.