Discovery Method
Radial Velocity
Consistent across records
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ExoplanetDetail
HD 180902 b
Host star HD 180902 • 510.9 d orbit
Records
3
archive rows
Discovery
2009
Radial Velocity
Radius
—
default parameter set
Mass
535.5 M⊕
default parameter set
HD 180902
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: Luhn et al. 2019
Host Star
HD 180902
Stable across source rows
Discovery Year
2009
Stable across source rows
Orbital Period
510.9 day
479 to 510.9
Semi-Major Axis
1.40 au
1.38 to 1.40
Mass
535.5 Mearth
495.8 to 535.5
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 |
|---|---|---|---|---|---|---|---|---|
| 2009 | Radial Velocity | W. M. Keck Observatory | 10 m Keck I Telescope | 510.9 day | — | 535.5 Mearth | — | Luhn et al. 2019 |
| 2009 | Radial Velocity | W. M. Keck Observatory | 10 m Keck I Telescope | 479 day | — | 508.5 Mearth | — | Johnson et al. 2010 |
| 2009 | Radial Velocity | W. M. Keck Observatory | 10 m Keck I Telescope | 479 day | — | 495.8 Mearth | — | Stassun et al. 2017 |