The star
The star
KOI-1783
- Type
- yellow star
- Surface
- ≈ 5,922 K
- Size
- 1.14 × the Sun
- Mass
- 1.08 × the Sun
- Brightness
- 1.63 × the Sun
- Habitable zone
- 0.951–2.23 AU
The planets
KOI-1783
KOI-1783.01
- Year
- 134.46 days
- Distance from star
- 0.527 AU
- Mass
- 71 Earths
- Size
- 8.9 × Earth
- Temperature
- ≈ 412 K (+139 °C)
- Found
- 2020, transit (Kepler)
KOI-1783
KOI-1783.02
- Year
- 284.21 days
- Distance from star
- 0.867 AU
- Mass
- 15 Earths
- Size
- 5.4 × Earth
- Temperature
- ≈ 321 K (+48 °C)
- Found
- 2020, 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.