Discovery Method
Transit
Consistent across records
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ExoplanetDetail
WASP-42 b
Host star WASP-42 • 12.58 R⊕ • 4.98 d orbit
Records
7
archive rows
Discovery
2012
Transit
Radius
12.58 R⊕
default parameter set
Mass
167.5 M⊕
default parameter set
WASP-42
1021 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: Southworth et al. 2016
Host Star
WASP-42
Stable across source rows
Discovery Year
2012
Stable across source rows
Orbital Period
4.98 day
4.98 to 4.98
Semi-Major Axis
0.06 au
0.05 to 0.06
Radius
12.58 Rearth
10.78 to 12.58
Mass
167.5 Mearth
158.9 to 167.5
Density
0.46 g/cm**3
0.46 to 0.53
Equilibrium Temperature
1021 K
953 to 1021
Scale Comparison
Radius against familiar reference worlds
Current adopted radius: 12.58 R⊕ • circles scaled linearly by radius
Earth
1.0 R⊕ baseline
WASP-42 b
12.58 R⊕
Jupiter
11.2 R⊕ reference
Provenance
Underlying measurements and references
Evidence Summary
Rows
7
Refs
7
Methods
1
Discoverystable
Facilitystable
Periodstable
Radiusdisputed
Massdisputed
Eq. Tempdisputed
| Year | Method | Facility | Telescope | Period | Radius | Mass | Eq. Temp | Reference |
|---|---|---|---|---|---|---|---|---|
| 2012 | Transit | SuperWASP | Canon 200mm f/1.8L | 4.98 day | 12.11 Rearth | 158.9 Mearth | — | Lendl et al. 2012 |
| 2012 | Transit | SuperWASP | Canon 200mm f/1.8L | 4.98 day | 12.58 Rearth | 167.5 Mearth | 1021 K | Southworth et al. 2016 |
| 2012 | Transit | SuperWASP | Canon 200mm f/1.8L | 4.98 day | 11.92 Rearth | 159.2 Mearth | — | Bonomo et al. 2017 |
| 2012 | Transit | SuperWASP | Canon 200mm f/1.8L | 4.98 day | — | — | — | Ivshina & Winn 2022 |
| 2012 | Transit | SuperWASP | Canon 200mm f/1.8L | 4.98 day | — | — | — | Patel & Espinoza 2022 |
| 2012 | Transit | SuperWASP | Canon 200mm f/1.8L | 4.98 day | 10.78 Rearth | — | 953 K | ExoFOP |
| 2012 | Transit | SuperWASP | Canon 200mm f/1.8L | 4.98 day | — | — | — | Kokori et al. 2023 |