The star
The star
Kepler-143
- Type
- yellow star
- Surface
- ≈ 5,848 K
- Size
- 1.36 × the Sun
- Mass
- 0.98 × the Sun
- Brightness
- 1.97 × the Sun
- Habitable zone
- 1.05–2.46 AU
The planets
Kepler-143
Kepler-143 b
- Year
- 16.01 days
- Distance from star
- 0.127 AU
- Mass
- 6.4 Earths
- Size
- 2.4 × Earth
- Temperature
- ≈ 838 K (+565 °C)
- Found
- 2014, transit (Kepler)
Kepler-143
Kepler-143 c
- Year
- 27.08 days
- Distance from star
- 0.181 AU
- Mass
- 11 Earths
- Size
- 3.4 × Earth
- Temperature
- ≈ 703 K (+430 °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.