Discovery Method
Radial Velocity
Consistent across records
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ExoplanetDetail
HD 210277 b
Host star HD 210277 • 442.2 d orbit
Records
5
archive rows
Discovery
1998
Radial Velocity
Radius
—
default parameter set
Mass
410.0 M⊕
default parameter set
HD 210277
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
HD 210277
Stable across source rows
Discovery Year
1998
Stable across source rows
Orbital Period
442.2 day
437 to 442.9
Semi-Major Axis
1.13 au
1.10 to 1.14
Mass
410.0 Mearth
390.9 to 410.0
Provenance
Underlying measurements and references
Evidence Summary
Rows
5
Refs
5
Methods
1
Discoverystable
Facilitystable
Perioddisputed
Massdisputed
| Year | Method | Facility | Telescope | Period | Radius | Mass | Eq. Temp | Reference |
|---|---|---|---|---|---|---|---|---|
| 1998 | Radial Velocity | W. M. Keck Observatory | 10 m Keck I Telescope | 442.2 day | — | 410.0 Mearth | — | Butler et al. 2006 |
| 1998 | Radial Velocity | W. M. Keck Observatory | 10 m Keck I Telescope | 442.1 day | — | 390.9 Mearth | — | Wittenmyer et al. 2007 |
| 1998 | Radial Velocity | W. M. Keck Observatory | 10 m Keck I Telescope | 437 day | — | 406.8 Mearth | — | Marcy et al. 1999 |
| 1998 | Radial Velocity | W. M. Keck Observatory | 10 m Keck I Telescope | 442.2 day | — | 410.0 Mearth | — | Stassun et al. 2017 |
| 1998 | Radial Velocity | W. M. Keck Observatory | 10 m Keck I Telescope | 442.9 day | — | 392.8 Mearth | — | Rosenthal et al. 2021 |