The star
The star
Kepler-142
- Type
- yellow star
- Surface
- ≈ 5,790 K
- Size
- 1.27 × the Sun
- Mass
- 0.98 × the Sun
- Brightness
- 1.28 × the Sun
- Habitable zone
- 0.848–2 AU
The planets
Kepler-142
Kepler-142 b
- Year
- 2.02 days
- Distance from star
- 0.032 AU
- Mass
- 4.6 Earths
- Size
- 2 × Earth
- Temperature
- ≈ 1597 K (+1324 °C)
- Found
- 2014, transit (Kepler)
Kepler-142
Kepler-142 c
- Year
- 4.76 days
- Distance from star
- 0.057 AU
- Mass
- 8.6 Earths
- Size
- 2.9 × Earth
- Temperature
- ≈ 1201 K (+928 °C)
- Found
- 2014, transit (Kepler)
Kepler-142
Kepler-142 d
- Year
- 41.81 days
- Distance from star
- 0.242 AU
- Mass
- 5.3 Earths
- Size
- 2.2 × Earth
- Temperature
- ≈ 582 K (+309 °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.