Discovery Method
Transit
Consistent across records
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ExoplanetDetail
Qatar-4 b
Host star Qatar-4 • 12.72 R⊕ • 1.81 d orbit
Records
6
archive rows
Discovery
2017
Transit
Radius
12.72 R⊕
default parameter set
Mass
1938.8 M⊕
default parameter set
Qatar-4
1385 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: Alsubai et al. 2017
Host Star
Qatar-4
Stable across source rows
Discovery Year
2017
Stable across source rows
Orbital Period
1.81 day
1.81 to 1.81
Semi-Major Axis
0.03 au
single adopted value
Radius
12.72 Rearth
12.02 to 12.72
Mass
1938.8 Mearth
single adopted value
Density
5.10 g/cm**3
single adopted value
Equilibrium Temperature
1385 K
1226.8 to 1385
Scale Comparison
Radius against familiar reference worlds
Current adopted radius: 12.72 R⊕ • circles scaled linearly by radius
Earth
1.0 R⊕ baseline
Qatar-4 b
12.72 R⊕
Jupiter
11.2 R⊕ reference
Provenance
Underlying measurements and references
Evidence Summary
Rows
6
Refs
6
Methods
1
Discoverystable
Facilitystable
Periodstable
Radiusdisputed
Massstable
Eq. Tempdisputed
| Year | Method | Facility | Telescope | Period | Radius | Mass | Eq. Temp | Reference |
|---|---|---|---|---|---|---|---|---|
| 2017 | Transit | Qatar | Canon 400mm f/2.8L | 1.81 day | 12.72 Rearth | 1938.8 Mearth | 1385 K | Alsubai et al. 2017 |
| 2017 | Transit | Qatar | Canon 400mm f/2.8L | 1.81 day | 12.02 Rearth | — | 1226.8 K | ExoFOP |
| 2017 | Transit | Qatar | Canon 400mm f/2.8L | 1.81 day | — | — | — | Mallonn et al. 2019 |
| 2017 | Transit | Qatar | Canon 400mm f/2.8L | 1.81 day | — | — | — | Kokori et al. 2023 |
| 2017 | Transit | Qatar | Canon 400mm f/2.8L | 1.81 day | — | — | — | Ivshina & Winn 2022 |
| 2017 | Transit | Qatar | Canon 400mm f/2.8L | 1.81 day | — | — | — | Kokori et al. 2022 |