Discovery Method
Radial Velocity
Consistent across records
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ExoplanetDetail
HD 154857 b
Host star HD 154857 • 408.6 d orbit
Records
3
archive rows
Discovery
2004
Radial Velocity
Radius
—
default parameter set
Mass
778.7 M⊕
default parameter set
HD 154857
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 154857
Stable across source rows
Discovery Year
2004
Stable across source rows
Orbital Period
408.6 day
408.6 to 409
Semi-Major Axis
1.29 au
1.20 to 1.29
Mass
778.7 Mearth
570 to 778.7
Provenance
Underlying measurements and references
Evidence Summary
Rows
3
Refs
3
Methods
1
Discoverystable
Facilitystable
Perioddisputed
Massdisputed
| Year | Method | Facility | Telescope | Period | Radius | Mass | Eq. Temp | Reference |
|---|---|---|---|---|---|---|---|---|
| 2004 | Radial Velocity | Anglo-Australian Telescope | 3.9 m Anglo-Australian Telescope | 408.6 day | — | 778.7 Mearth | — | Stassun et al. 2017 |
| 2004 | Radial Velocity | Anglo-Australian Telescope | 3.9 m Anglo-Australian Telescope | 408.6 day | — | 711.9 Mearth | — | Wittenmyer et al. 2014 |
| 2004 | Radial Velocity | Anglo-Australian Telescope | 3.9 m Anglo-Australian Telescope | 409 day | — | 570 Mearth | — | McCarthy et al. 2004 |