The star
The star
Kepler-1542
- Type
- yellow star
- Surface
- ≈ 5,564 K
- Size
- 0.99 × the Sun
- Mass
- 0.94 × the Sun
- Brightness
- 1.18 × the Sun
- Habitable zone
- 0.824–1.95 AU
The planets
Kepler-1542
Kepler-1542 c
- Year
- 2.89 days
- Distance from star
- 0.0387 AU
- Mass
- 0.21 Earths
- Size
- 0.65 × Earth
- Temperature
- ≈ 1287 K (+1014 °C)
- Found
- 2016, transit (Kepler)
Kepler-1542
Kepler-1542 b
- Year
- 3.95 days
- Distance from star
- 0.0476 AU
- Mass
- 0.36 Earths
- Size
- 0.76 × Earth
- Temperature
- ≈ 1160 K (+887 °C)
- Found
- 2016, transit (Kepler)
Kepler-1542
Kepler-1542 e
- Year
- 5.10 days
- Distance from star
- 0.0565 AU
- Mass
- 0.36 Earths
- Size
- 0.76 × Earth
- Temperature
- ≈ 1065 K (+792 °C)
- Found
- 2016, transit (Kepler)
Kepler-1542
Kepler-1542 d
- Year
- 5.99 days
- Distance from star
- 0.0629 AU
- Mass
- 0.59 Earths
- Size
- 0.87 × Earth
- Temperature
- ≈ 1010 K (+737 °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.