Discovery Method
Transit
Consistent across records
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ExoplanetDetail
TOI-257 b
Host star TOI-257 • 7.16 R⊕ • 18.39 d orbit
Records
3
archive rows
Discovery
2021
Transit
Radius
7.16 R⊕
default parameter set
Mass
43.86 M⊕
default parameter set
TOI-257
1027 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: Addison et al. 2021
Host Star
TOI-257
Stable across source rows
Discovery Year
2021
Stable across source rows
Orbital Period
18.39 day
18.39 to 18.39
Semi-Major Axis
0.15 au
single adopted value
Radius
7.16 Rearth
6.38 to 7.16
Mass
43.86 Mearth
single adopted value
Density
0.65 g/cm**3
single adopted value
Equilibrium Temperature
1027 K
972.4 to 1027
Scale Comparison
Radius against familiar reference worlds
Current adopted radius: 7.16 R⊕ • circles scaled linearly by radius
Earth
1.0 R⊕ baseline
TOI-257 b
7.16 R⊕
Jupiter
11.2 R⊕ reference
Provenance
Underlying measurements and references
Evidence Summary
Rows
3
Refs
3
Methods
1
Discoverystable
Facilitystable
Periodstable
Radiusdisputed
Massstable
Eq. Tempdisputed
| Year | Method | Facility | Telescope | Period | Radius | Mass | Eq. Temp | Reference |
|---|---|---|---|---|---|---|---|---|
| 2021 | Transit | Transiting Exoplanet Survey Satellite (TESS) | 0.1 m TESS Telescope | 18.39 day | 6.38 Rearth | — | 972.4 K | ExoFOP |
| 2021 | Transit | Transiting Exoplanet Survey Satellite (TESS) | 0.1 m TESS Telescope | 18.39 day | 7.16 Rearth | 43.86 Mearth | 1027 K | Addison et al. 2021 |
| 2021 | Transit | Transiting Exoplanet Survey Satellite (TESS) | 0.1 m TESS Telescope | 18.39 day | — | — | — | Kokori et al. 2023 |