Discovery Method
Radial Velocity
Consistent across records
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ExoplanetDetail
HD 221420 b
Host star HD 221420 • 10090 d orbit
Records
6
archive rows
Discovery
2019
Radial Velocity
Radius
—
default parameter set
Mass
7278.3 M⊕
default parameter set
HD 221420
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: Venner et al. 2021
Host Star
HD 221420
Stable across source rows
Discovery Year
2019
Stable across source rows
Orbital Period
10090 day
8615.4 to 22482
Semi-Major Axis
10.15 au
8.40 to 18.50
Mass
7278.3 Mearth
3083.0 to 7278.3
Provenance
Underlying measurements and references
Evidence Summary
Rows
6
Refs
6
Methods
1
Discoverystable
Facilitystable
Perioddisputed
Massdisputed
| Year | Method | Facility | Telescope | Period | Radius | Mass | Eq. Temp | Reference |
|---|---|---|---|---|---|---|---|---|
| 2019 | Radial Velocity | Anglo-Australian Telescope | 3.9 m Anglo-Australian Telescope | 10066 day | — | 6992.2 Mearth | — | Philipot et al. 2023 |
| 2019 | Radial Velocity | Anglo-Australian Telescope | 3.9 m Anglo-Australian Telescope | 22482 day | — | 3083.0 Mearth | — | Kane et al. 2019 |
| 2019 | Radial Velocity | Anglo-Australian Telescope | 3.9 m Anglo-Australian Telescope | 8615.4 day | — | 6467.8 Mearth | — | Feng et al. 2022 |
| 2019 | Radial Velocity | Anglo-Australian Telescope | 3.9 m Anglo-Australian Telescope | 11100 day | — | 6324.8 Mearth | — | An et al. 2025 |
| 2019 | Radial Velocity | Anglo-Australian Telescope | 3.9 m Anglo-Australian Telescope | 10090 day | — | 7278.3 Mearth | — | Venner et al. 2021 |
| 2019 | Radial Velocity | Anglo-Australian Telescope | 3.9 m Anglo-Australian Telescope | 10120 day | — | 6547.3 Mearth | — | Li et al. 2021 |