The star
The star
Kepler-85
- Type
- yellow star
- Surface
- ≈ 5,436 K
- Size
- 0.89 × the Sun
- Mass
- 0.95 × the Sun
- Brightness
- 0.613 × the Sun
- Habitable zone
- 0.6–1.43 AU
The planets
Kepler-85
Kepler-85 b
- Year
- 8.30 days
- Distance from star
- 0.0789 AU
- Mass
- 1.8 Earths
- Size
- 1.8 × Earth
- Temperature
- ≈ 809 K (+536 °C)
- Found
- 2012, transit (Kepler)
Kepler-85
Kepler-85 c
- Year
- 12.51 days
- Distance from star
- 0.104 AU
- Mass
- 2.1 Earths
- Size
- 2 × Earth
- Temperature
- ≈ 706 K (+433 °C)
- Found
- 2012, transit (Kepler)
Kepler-85
Kepler-85 d
- Year
- 17.91 days
- Distance from star
- 0.13 AU
- Mass
- 8.7 Earths
- Size
- 1.2 × Earth
- Temperature
- ≈ 626 K (+353 °C)
- Found
- 2014, transit (Kepler)
Kepler-85
Kepler-85 e
- Year
- 25.22 days
- Distance from star
- 0.163 AU
- Mass
- 0.6 Earths
- Size
- 1.3 × Earth
- Temperature
- ≈ 559 K (+286 °C)
- Found
- 2014, 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.