The star
The star
Kepler-169
- Type
- orange dwarf
- Surface
- ≈ 4,997 K
- Size
- 0.76 × the Sun
- Mass
- 0.82 × the Sun
- Brightness
- 0.319 × the Sun
- Habitable zone
- 0.443–1.07 AU
The planets
Kepler-169
Kepler-169 b
- Year
- 3.25 days
- Distance from star
- 0.04 AU
- Mass
- 1.5 Earths
- Size
- 1.1 × Earth
- Temperature
- ≈ 962 K (+689 °C)
- Found
- 2014, transit (Kepler)
Kepler-169
Kepler-169 c
- Year
- 6.20 days
- Distance from star
- 0.062 AU
- Mass
- 1.9 Earths
- Size
- 1.2 × Earth
- Temperature
- ≈ 776 K (+503 °C)
- Found
- 2014, transit (Kepler)
Kepler-169
Kepler-169 d
- Year
- 8.35 days
- Distance from star
- 0.075 AU
- Mass
- 2.1 Earths
- Size
- 1.2 × Earth
- Temperature
- ≈ 702 K (+429 °C)
- Found
- 2014, transit (Kepler)
Kepler-169
Kepler-169 e
- Year
- 13.77 days
- Distance from star
- 0.105 AU
- Mass
- 5.5 Earths
- Size
- 2.2 × Earth
- Temperature
- ≈ 595 K (+322 °C)
- Found
- 2014, transit (Kepler)
Kepler-169
Kepler-169 f
- Year
- 87.09 days
- Distance from star
- 0.359 AU
- Mass
- 7.2 Earths
- Size
- 2.6 × Earth
- Temperature
- ≈ 321 K (+48 °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.