Discovery Method
Transit
Consistent across records
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ExoplanetDetail
HD 1397 b
Host star HD 1397 • 11.50 R⊕ • 11.54 d orbit
Records
4
archive rows
Discovery
2018
Transit
Radius
11.50 R⊕
default parameter set
Mass
131.9 M⊕
default parameter set
HD 1397
1228.3 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: Nielsen et al. 2019
Host Star
HD 1397
Stable across source rows
Discovery Year
2018
Stable across source rows
Orbital Period
11.54 day
11.54 to 11.54
Semi-Major Axis
0.11 au
0.10 to 0.11
Radius
11.50 Rearth
11.47 to 12.22
Mass
131.9 Mearth
116.6 to 131.9
Density
0.48 g/cm**3
single adopted value
Equilibrium Temperature
1228.3 K
1228.3 to 1519
Scale Comparison
Radius against familiar reference worlds
Current adopted radius: 11.50 R⊕ • circles scaled linearly by radius
Earth
1.0 R⊕ baseline
HD 1397 b
11.50 R⊕
Jupiter
11.2 R⊕ reference
Provenance
Underlying measurements and references
Evidence Summary
Rows
4
Refs
4
Methods
1
Discoverystable
Facilitystable
Periodstable
Radiusdisputed
Massdisputed
Eq. Tempdisputed
| Year | Method | Facility | Telescope | Period | Radius | Mass | Eq. Temp | Reference |
|---|---|---|---|---|---|---|---|---|
| 2018 | Transit | Transiting Exoplanet Survey Satellite (TESS) | 0.1 m TESS Telescope | 11.54 day | 12.22 Rearth | — | — | ExoFOP |
| 2018 | Transit | Transiting Exoplanet Survey Satellite (TESS) | 0.1 m TESS Telescope | 11.54 day | 11.50 Rearth | 131.9 Mearth | 1228.3 K | Nielsen et al. 2019 |
| 2018 | Transit | Transiting Exoplanet Survey Satellite (TESS) | 0.1 m TESS Telescope | 11.54 day | 11.47 Rearth | 116.6 Mearth | 1519 K | Brahm et al. 2019 |
| 2018 | Transit | Transiting Exoplanet Survey Satellite (TESS) | 0.1 m TESS Telescope | 11.54 day | — | — | — | Patel & Espinoza 2022 |