The star
The star
Kepler-176
- Type
- orange dwarf
- Surface
- ≈ 5,232 K
- Size
- 0.89 × the Sun
- Mass
- 0.86 × the Sun
- Brightness
- 0.394 × the Sun
- Habitable zone
- 0.486–1.16 AU
The planets
Kepler-176
Kepler-176 b
- Year
- 5.43 days
- Distance from star
- 0.058 AU
- Mass
- 2.9e+02 Earths
- Size
- 1.4 × Earth
- Temperature
- ≈ 841 K (+568 °C)
- Found
- 2014, transit (Kepler)
Kepler-176
Kepler-176 c
- Year
- 12.76 days
- Distance from star
- 0.102 AU
- Mass
- 1.3 Earths
- Size
- 2.6 × Earth
- Temperature
- ≈ 633 K (+360 °C)
- Found
- 2014, transit (Kepler)
Kepler-176
Kepler-176 d
- Year
- 25.75 days
- Distance from star
- 0.163 AU
- Mass
- 1.7 Earths
- Size
- 2.5 × Earth
- Temperature
- ≈ 501 K (+228 °C)
- Found
- 2014, transit (Kepler)
Kepler-176
Kepler-176 e
- Year
- 51.17 days
- Distance from star
- 0.257 AU
- Mass
- 0.52 Earths
- Size
- 1.4 × Earth
- Temperature
- ≈ 398 K (+125 °C)
- Found
- 2016, 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.