Discovery Method
Transit
Consistent across records
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ExoplanetDetail
K2-389 b
Host star K2-389 • 2.33 R⊕ • 8.58 d orbit
Records
3
archive rows
Discovery
2022
Transit
Radius
2.33 R⊕
default parameter set
Mass
—
default parameter set
K2-389
932 K equilibrium
Canonical Summary
Adopted planet values from the default parameter set
Values come from the archive's default parameter set. Missing values stay missing. Ranges and counts describe all source rows.
Selected source: Howard et al. 2025
Host Star
K2-389
Stable across source rows
Discovery Year
2022
Stable across source rows
Orbital Period
8.58 day
8.58 to 8.58
Radius
2.33 Rearth
2.12 to 2.33
Equilibrium Temperature
932 K
single adopted value
Scale Comparison
Radius against familiar reference worlds
Current adopted radius: 2.33 R⊕ • circles scaled linearly by radius
Earth
1.0 R⊕ baseline
K2-389 b
2.33 R⊕
Jupiter
11.2 R⊕ reference
Provenance
Underlying measurements and references
Evidence Summary
Rows
3
Refs
3
Methods
1
Discoverystable
Facilitystable
Periodstable
Radiusdisputed
Eq. Tempstable
| Year | Method | Facility | Telescope | Period | Radius | Mass | Eq. Temp | Reference |
|---|---|---|---|---|---|---|---|---|
| 2022 | Transit | K2 | 0.95 m Kepler Telescope | 8.58 day | 2.12 Rearth | — | — | Zink et al. 2021 |
| 2022 | Transit | K2 | 0.95 m Kepler Telescope | 8.58 day | 2.33 Rearth | — | 932 K | Howard et al. 2025 |
| 2022 | Transit | K2 | 0.95 m Kepler Telescope | 8.58 day | 2.18 Rearth | — | — | Christiansen et al. 2022 |