Discovery Method
Transit
Consistent across records
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ExoplanetDetail
HAT-P-8 b
Host star HAT-P-8 • 15.69 R⊕ • 3.08 d orbit
Records
10
archive rows
Discovery
2008
Transit
Radius
15.69 R⊕
default parameter set
Mass
406.8 M⊕
default parameter set
HAT-P-8
temperature unconstrained
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: Stassun et al. 2017
Host Star
HAT-P-8
Stable across source rows
Discovery Year
2008
Stable across source rows
Orbital Period
3.08 day
3.08 to 3.08
Radius
15.69 Rearth
14.23 to 16.81
Mass
406.8 Mearth
405.2 to 483.1
Scale Comparison
Radius against familiar reference worlds
Current adopted radius: 15.69 R⊕ • circles scaled linearly by radius
Earth
1.0 R⊕ baseline
HAT-P-8 b
15.69 R⊕
Jupiter
11.2 R⊕ reference
Provenance
Underlying measurements and references
Evidence Summary
Rows
10
Refs
10
Methods
1
Discoverystable
Facilitystable
Periodstable
Radiusdisputed
Massdisputed
Eq. Tempdisputed
| Year | Method | Facility | Telescope | Period | Radius | Mass | Eq. Temp | Reference |
|---|---|---|---|---|---|---|---|---|
| 2008 | Transit | HATNet | Canon 200mm f/1.8L | 3.08 day | — | — | — | Kokori et al. 2023 |
| 2008 | Transit | HATNet | Canon 200mm f/1.8L | 3.08 day | — | 483.1 Mearth | — | Moutou et al. 2011 |
| 2008 | Transit | HATNet | Canon 200mm f/1.8L | 3.08 day | — | — | — | Ivshina & Winn 2022 |
| 2008 | Transit | HATNet | Canon 200mm f/1.8L | 3.08 day | 16.81 Rearth | 483.1 Mearth | 1700 K | Latham et al. 2009 |
| 2008 | Transit | HATNet | Canon 200mm f/1.8L | 3.08 day | 14.23 Rearth | — | 1592.5 K | ExoFOP |
| 2008 | Transit | HATNet | Canon 200mm f/1.8L | 3.08 day | — | — | — | Kokori et al. 2022 |
| 2008 | Transit | HATNet | Canon 200mm f/1.8L | 3.08 day | 15.69 Rearth | 406.8 Mearth | — | Stassun et al. 2017 |
| 2008 | Transit | HATNet | Canon 200mm f/1.8L | 3.08 day | 16.81 Rearth | 430.3 Mearth | — | Bonomo et al. 2017 |
| 2008 | Transit | HATNet | Canon 200mm f/1.8L | 3.08 day | 14.81 Rearth | 405.2 Mearth | 1713 K | Mancini et al. 2013 |
| 2008 | Transit | HATNet | Canon 200mm f/1.8L | — | — | 414.5 Mearth | — | Knutson et al. 2014 |