The star
The star
K2-32
- Type
- G9 V
- Surface
- ≈ 5,271 K
- Size
- 0.86 × the Sun
- Mass
- 0.83 × the Sun
- Brightness
- 0.506 × the Sun
- Habitable zone
- 0.549–1.31 AU
The planets
K2-32
K2-32 e
- Year
- 4.35 days
- Distance from star
- 0.049 AU
- Mass
- 2.1 Earths
- Size
- 1.2 × Earth
- Temperature
- ≈ 1066 K (+793 °C)
- Found
- 2019, transit (K2)
K2-32
K2-32 b
- Year
- 8.99 days
- Distance from star
- 0.0795 AU
- Mass
- 15 Earths
- Size
- 5.3 × Earth
- Temperature
- ≈ 837 K (+564 °C)
- Found
- 2016, transit (K2)
K2-32
K2-32 c
- Year
- 20.66 days
- Distance from star
- 0.138 AU
- Mass
- 8.1 Earths
- Size
- 3.1 × Earth
- Temperature
- ≈ 634 K (+361 °C)
- Found
- 2016, transit (K2)
K2-32
K2-32 d
- Year
- 31.72 days
- Distance from star
- 0.184 AU
- Mass
- 6.7 Earths
- Size
- 3.5 × Earth
- Temperature
- ≈ 550 K (+277 °C)
- Found
- 2016, transit (K2)
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.