Discovery Method
Transit
Consistent across records
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ExoplanetDetail
HAT-P-20 b
Host star HAT-P-20 • 9.72 R⊕ • 2.88 d orbit
Records
10
archive rows
Discovery
2010
Transit
Radius
9.72 R⊕
default parameter set
Mass
2302.9 M⊕
default parameter set
HAT-P-20
970 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: Bakos et al. 2010
Host Star
HAT-P-20
Stable across source rows
Discovery Year
2010
Stable across source rows
Orbital Period
2.88 day
2.88 to 2.90
Semi-Major Axis
0.04 au
0.04 to 0.04
Radius
9.72 Rearth
9.72 to 11.49
Mass
2302.9 Mearth
2294.7 to 2320.1
Density
13.78 g/cm**3
8.31 to 13.80
Equilibrium Temperature
970 K
846 to 1134
Scale Comparison
Radius against familiar reference worlds
Current adopted radius: 9.72 R⊕ • circles scaled linearly by radius
Earth
1.0 R⊕ baseline
HAT-P-20 b
9.72 R⊕
Jupiter
11.2 R⊕ reference
Provenance
Underlying measurements and references
Evidence Summary
Rows
10
Refs
10
Methods
1
Discoverystable
Facilitystable
Perioddisputed
Radiusdisputed
Massdisputed
Eq. Tempdisputed
| Year | Method | Facility | Telescope | Period | Radius | Mass | Eq. Temp | Reference |
|---|---|---|---|---|---|---|---|---|
| 2010 | Transit | HATNet | Canon 200mm f/1.8L | 2.88 day | — | — | — | Kokori et al. 2023 |
| 2010 | Transit | HATNet | Canon 200mm f/1.8L | 2.90 day | 9.75 Rearth | 2320.1 Mearth | 950 K | Salz et al. 2015 |
| 2010 | Transit | HATNet | Canon 200mm f/1.8L | 2.88 day | 11.49 Rearth | 2294.7 Mearth | 964 K | Esposito et al. 2017 |
| 2010 | Transit | HATNet | Canon 200mm f/1.8L | 2.88 day | — | — | — | Ivshina & Winn 2022 |
| 2010 | Transit | HATNet | Canon 200mm f/1.8L | 2.88 day | 9.72 Rearth | 2310.6 Mearth | — | Bonomo et al. 2017 |
| 2010 | Transit | HATNet | Canon 200mm f/1.8L | 2.88 day | — | — | — | Kokori et al. 2022 |
| 2010 | Transit | HATNet | Canon 200mm f/1.8L | 2.88 day | — | — | 1134 K | Deming et al. 2015 |
| 2010 | Transit | HATNet | Canon 200mm f/1.8L | — | — | 2301.1 Mearth | — | Knutson et al. 2014 |
| 2010 | Transit | HATNet | Canon 200mm f/1.8L | 2.88 day | 11.13 Rearth | — | 846 K | ExoFOP |
| 2010 | Transit | HATNet | Canon 200mm f/1.8L | 2.88 day | 9.72 Rearth | 2302.9 Mearth | 970 K | Bakos et al. 2010 |