The star
The star
K2-384
- Type
- M4 V
- Surface
- ≈ 3,623 K
- Size
- 0.35 × the Sun
- Mass
- 0.33 × the Sun
- Brightness
- 0.0135 × the Sun
- Habitable zone
- 0.0949–0.245 AU
The planets
K2-384
K2-384 b
- Year
- 2.23 days
- Distance from star
- 0.0231 AU
- Mass
- 1.3 Earths
- Size
- 1.1 × Earth
- Found
- 2022, transit (K2)
K2-384
K2-384 c
- Year
- 4.19 days
- Distance from star
- 0.0352 AU
- Mass
- 1.8 Earths
- Size
- 1.2 × Earth
- Found
- 2022, transit (K2)
K2-384
K2-384 d
- Year
- 6.68 days
- Distance from star
- 0.048 AU
- Mass
- 2.5 Earths
- Size
- 1.4 × Earth
- Found
- 2022, transit (K2)
K2-384
K2-384 e
- Year
- 9.71 days
- Distance from star
- 0.0616 AU
- Mass
- 2.4 Earths
- Size
- 1.3 × Earth
- Found
- 2022, transit (K2)
K2-384
K2-384 f
- Year
- 13.63 days
- Distance from star
- 0.0772 AU
- Mass
- 5.6 Earths
- Size
- 2.2 × Earth
- Found
- 2022, 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.