Discovery Method
Transit
Consistent across records
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ExoplanetDetail
HAT-P-57 b
Host star HAT-P-57 • 19.50 R⊕ • 2.47 d orbit
Records
5
archive rows
Discovery
2015
Transit
Radius
19.50 R⊕
default parameter set
Mass
448.1 M⊕
default parameter set
HAT-P-57
temperature unconstrained
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: Stassun et al. 2017
Host Star
HAT-P-57
Stable across source rows
Discovery Year
2015
Stable across source rows
Orbital Period
2.47 day
2.47 to 2.47
Radius
19.50 Rearth
15.84 to 19.50
Mass
448.1 Mearth
448.1 to 588.0
Scale Comparison
Radius against familiar reference worlds
Current adopted radius: 19.50 R⊕ • circles scaled linearly by radius
Earth
1.0 R⊕ baseline
HAT-P-57 b
19.50 R⊕
Jupiter
11.2 R⊕ reference
Provenance
Underlying measurements and references
Evidence Summary
Rows
5
Refs
5
Methods
1
Discoverystable
Facilitystable
Periodstable
Radiusdisputed
Massdisputed
Eq. Tempdisputed
| Year | Method | Facility | Telescope | Period | Radius | Mass | Eq. Temp | Reference |
|---|---|---|---|---|---|---|---|---|
| 2015 | Transit | HATNet | Multiple Telescopes | 2.47 day | 19.50 Rearth | 448.1 Mearth | — | Stassun et al. 2017 |
| 2015 | Transit | HATNet | Multiple Telescopes | 2.47 day | — | — | — | Kokori et al. 2023 |
| 2015 | Transit | HATNet | Multiple Telescopes | 2.47 day | 15.84 Rearth | 588.0 Mearth | 2200 K | Hartman et al. 2015 |
| 2015 | Transit | HATNet | Multiple Telescopes | 2.47 day | 17.09 Rearth | — | 1843 K | ExoFOP |
| 2015 | Transit | HATNet | Multiple Telescopes | 2.47 day | — | — | — | Kokori et al. 2022 |