Discovery Method
Transit
Consistent across records
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ExoplanetDetail
HIP 9618 b
Host star HIP 9618 • 3.83 R⊕ • 20.77 d orbit
Records
4
archive rows
Discovery
2023
Transit
Radius
3.83 R⊕
default parameter set
Mass
8.30 M⊕
default parameter set
HIP 9618
640.9 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: Polanski et al. 2024
Host Star
HIP 9618
Stable across source rows
Discovery Year
2023
Stable across source rows
Orbital Period
20.77 day
20.77 to 20.77
Semi-Major Axis
0.14 au
0.14 to 0.14
Radius
3.83 Rearth
3.75 to 3.92
Mass
8.30 Mearth
8.30 to 10
Density
0.81 g/cm**3
0.81 to 0.90
Equilibrium Temperature
640.9 K
640.9 to 1060
Scale Comparison
Radius against familiar reference worlds
Current adopted radius: 3.83 R⊕ • circles scaled linearly by radius
Earth
1.0 R⊕ baseline
HIP 9618 b
3.83 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 |
|---|---|---|---|---|---|---|---|---|
| 2023 | Transit | Transiting Exoplanet Survey Satellite (TESS) | 0.1 m TESS Telescope | 20.77 day | 3.92 Rearth | — | 1060 K | ExoFOP |
| 2023 | Transit | Transiting Exoplanet Survey Satellite (TESS) | 0.1 m TESS Telescope | 20.77 day | 3.83 Rearth | 8.30 Mearth | 640.9 K | Polanski et al. 2024 |
| 2023 | Transit | Transiting Exoplanet Survey Satellite (TESS) | 0.1 m TESS Telescope | 20.77 day | 3.75 Rearth | 8.40 Mearth | 685 K | Akana Murphy et al. 2023 |
| 2023 | Transit | Transiting Exoplanet Survey Satellite (TESS) | 0.1 m TESS Telescope | 20.77 day | 3.90 Rearth | 10 Mearth | 663.4 K | Osborn et al. 2023 |