Discovery Method
Imaging
Consistent across records
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ExoplanetDetail
HR 8799 e
Host star HR 8799 • 13.11 R⊕
Records
4
archive rows
Discovery
2010
Imaging
Radius
13.11 R⊕
default parameter set
Mass
3178.3 M⊕
default parameter set
HR 8799
1150 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: Gravity Collaboration et al. 2019
Host Star
HR 8799
Stable across source rows
Discovery Year
2010
Stable across source rows
Semi-Major Axis
16.40 au
14.50 to 16.99
Radius
13.11 Rearth
10.09 to 13.11
Mass
3178.3 Mearth
single adopted value
Equilibrium Temperature
1150 K
1150 to 1300
Scale Comparison
Radius against familiar reference worlds
Current adopted radius: 13.11 R⊕ • circles scaled linearly by radius
Earth
1.0 R⊕ baseline
HR 8799 e
13.11 R⊕
Jupiter
11.2 R⊕ reference
Provenance
Underlying measurements and references
Evidence Summary
Rows
4
Refs
4
Methods
1
Discoverystable
Facilitystable
Perioddisputed
Radiusdisputed
Massstable
Eq. Tempdisputed
| Year | Method | Facility | Telescope | Period | Radius | Mass | Eq. Temp | Reference |
|---|---|---|---|---|---|---|---|---|
| 2010 | Imaging | W. M. Keck Observatory | 10 m Keck II Telescope | 2.08e4 day | — | — | — | Zurlo et al. 2016 |
| 2010 | Imaging | W. M. Keck Observatory | 10 m Keck II Telescope | — | 13.11 Rearth | 3178.3 Mearth | 1150 K | Gravity Collaboration et al. 2019 |
| 2010 | Imaging | W. M. Keck Observatory | 10 m Keck II Telescope | — | 10.09 Rearth | — | 1300 K | Bonnefoy et al. 2016 |
| 2010 | Imaging | W. M. Keck Observatory | 10 m Keck II Telescope | 18000 day | — | — | — | Marois et al. 2010 |