Discovery Method
Transit
Consistent across records
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ExoplanetDetail
HD 28109 c
Host star HD 28109 • 4.13 R⊕ • 56.00 d orbit
Records
3
archive rows
Discovery
2022
Transit
Radius
4.13 R⊕
default parameter set
Mass
9.20 M⊕
default parameter set
HD 28109
643 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: Barone et al. 2025
Host Star
HD 28109
Stable across source rows
Discovery Year
2022
Stable across source rows
Orbital Period
56.00 day
56.00 to 56.01
Radius
4.13 Rearth
4.13 to 4.61
Mass
9.20 Mearth
7.94 to 9.20
Density
0.70 g/cm**3
single adopted value
Equilibrium Temperature
643 K
585.2 to 643
Scale Comparison
Radius against familiar reference worlds
Current adopted radius: 4.13 R⊕ • circles scaled linearly by radius
Earth
1.0 R⊕ baseline
HD 28109 c
4.13 R⊕
Jupiter
11.2 R⊕ reference
Provenance
Underlying measurements and references
Evidence Summary
Rows
3
Refs
3
Methods
1
Discoverystable
Facilitystable
Perioddisputed
Radiusdisputed
Massdisputed
Eq. Tempdisputed
| Year | Method | Facility | Telescope | Period | Radius | Mass | Eq. Temp | Reference |
|---|---|---|---|---|---|---|---|---|
| 2022 | Transit | Transiting Exoplanet Survey Satellite (TESS) | 0.1 m TESS Telescope | 56.00 day | 4.13 Rearth | 9.20 Mearth | 643 K | Barone et al. 2025 |
| 2022 | Transit | Transiting Exoplanet Survey Satellite (TESS) | 0.1 m TESS Telescope | 56.00 day | 4.61 Rearth | — | 596.7 K | ExoFOP |
| 2022 | Transit | Transiting Exoplanet Survey Satellite (TESS) | 0.1 m TESS Telescope | 56.01 day | 4.23 Rearth | 7.94 Mearth | 585.2 K | Dransfield et al. 2022 |