Discovery Method
Transit
Consistent across records
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ExoplanetDetail
WASP-138 b
Host star WASP-138 • 12.22 R⊕ • 3.63 d orbit
Records
5
archive rows
Discovery
2016
Transit
Radius
12.22 R⊕
default parameter set
Mass
387.8 M⊕
default parameter set
WASP-138
1590 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: Lam et al. 2017
Host Star
WASP-138
Stable across source rows
Discovery Year
2016
Stable across source rows
Orbital Period
3.63 day
3.63 to 3.63
Semi-Major Axis
0.05 au
single adopted value
Radius
12.22 Rearth
12.22 to 14.25
Mass
387.8 Mearth
single adopted value
Density
1.20 g/cm**3
single adopted value
Equilibrium Temperature
1590 K
1590 to 1616
Scale Comparison
Radius against familiar reference worlds
Current adopted radius: 12.22 R⊕ • circles scaled linearly by radius
Earth
1.0 R⊕ baseline
WASP-138 b
12.22 R⊕
Jupiter
11.2 R⊕ reference
Provenance
Underlying measurements and references
Evidence Summary
Rows
5
Refs
5
Methods
1
Discoverystable
Facilitystable
Periodstable
Radiusdisputed
Massstable
Eq. Tempdisputed
| Year | Method | Facility | Telescope | Period | Radius | Mass | Eq. Temp | Reference |
|---|---|---|---|---|---|---|---|---|
| 2016 | Transit | SuperWASP | Canon 200mm f/1.8L | 3.63 day | 14.25 Rearth | — | 1616 K | ExoFOP |
| 2016 | Transit | SuperWASP | Canon 200mm f/1.8L | 3.63 day | — | — | — | Patel & Espinoza 2022 |
| 2016 | Transit | SuperWASP | Canon 200mm f/1.8L | 3.63 day | — | — | — | Kokori et al. 2023 |
| 2016 | Transit | SuperWASP | Canon 200mm f/1.8L | 3.63 day | — | — | — | Ivshina & Winn 2022 |
| 2016 | Transit | SuperWASP | Canon 200mm f/1.8L | 3.63 day | 12.22 Rearth | 387.8 Mearth | 1590 K | Lam et al. 2017 |