Discovery Method
Transit
Consistent across records
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ExoplanetDetail
HAT-P-4 b
Host star HAT-P-4 • 14.28 R⊕ • 3.06 d orbit
Records
12
archive rows
Discovery
2007
Transit
Radius
14.28 R⊕
default parameter set
Mass
213.3 M⊕
default parameter set
HAT-P-4
1686 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: Torres et al. 2008
Host Star
HAT-P-4
Stable across source rows
Discovery Year
2007
Stable across source rows
Orbital Period
3.06 day
3.06 to 3.06
Semi-Major Axis
0.04 au
0.04 to 0.04
Radius
14.28 Rearth
14.24 to 15.32
Mass
213.3 Mearth
176.7 to 216.1
Density
0.40 g/cm**3
0.35 to 0.41
Equilibrium Temperature
1686 K
1686 to 1715
Scale Comparison
Radius against familiar reference worlds
Current adopted radius: 14.28 R⊕ • circles scaled linearly by radius
Earth
1.0 R⊕ baseline
HAT-P-4 b
14.28 R⊕
Jupiter
11.2 R⊕ reference
Provenance
Underlying measurements and references
Evidence Summary
Rows
12
Refs
12
Methods
1
Discoverystable
Facilitystable
Periodstable
Radiusdisputed
Massdisputed
Eq. Tempdisputed
| Year | Method | Facility | Telescope | Period | Radius | Mass | Eq. Temp | Reference |
|---|---|---|---|---|---|---|---|---|
| 2007 | Transit | HATNet | Canon 200mm f/1.8L | 3.06 day | 14.93 Rearth | 216.1 Mearth | — | Christiansen et al. 2011 |
| 2007 | Transit | HATNet | Canon 200mm f/1.8L | 3.06 day | — | — | — | Kokori et al. 2023 |
| 2007 | Transit | HATNet | Canon 200mm f/1.8L | 3.06 day | 14.28 Rearth | 213.3 Mearth | 1686 K | Torres et al. 2008 |
| 2007 | Transit | HATNet | Canon 200mm f/1.8L | 3.06 day | 14.99 Rearth | 216.1 Mearth | 1691 K | Southworth 2011 |
| 2007 | Transit | HATNet | Canon 200mm f/1.8L | 3.06 day | 14.28 Rearth | 206.9 Mearth | — | Bonomo et al. 2017 |
| 2007 | Transit | HATNet | Canon 200mm f/1.8L | 3.06 day | — | — | — | Ivshina & Winn 2022 |
| 2007 | Transit | HATNet | Canon 200mm f/1.8L | — | — | 203.1 Mearth | — | Knutson et al. 2014 |
| 2007 | Transit | HATNet | Canon 200mm f/1.8L | 3.06 day | 15.16 Rearth | — | 1715 K | ExoFOP |
| 2007 | Transit | HATNet | Canon 200mm f/1.8L | 3.06 day | 15.32 Rearth | 176.7 Mearth | — | Winn et al. 2011 |
| 2007 | Transit | HATNet | Canon 200mm f/1.8L | 3.06 day | — | 208.2 Mearth | — | Ment et al. 2018 |
| 2007 | Transit | HATNet | Canon 200mm f/1.8L | 3.06 day | — | — | — | Kokori et al. 2022 |
| 2007 | Transit | HATNet | Canon 200mm f/1.8L | 3.06 day | 14.24 Rearth | 216.1 Mearth | — | Kovacs et al. 2007 |