Discovery Method
Radial Velocity
Consistent across records
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ExoplanetDetail
XO-2 S b
Host star XO-2 S • 18.22 d orbit
Records
3
archive rows
Discovery
2014
Radial Velocity
Radius
—
default parameter set
Mass
82.64 M⊕
default parameter set
XO-2 S
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: Ruggieri et al. 2024
Host Star
XO-2 S
Stable across source rows
Discovery Year
2014
Stable across source rows
Orbital Period
18.22 day
18.16 to 18.22
Semi-Major Axis
0.13 au
0.13 to 0.13
Mass
82.64 Mearth
82.31 to 82.64
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 |
|---|---|---|---|---|---|---|---|---|
| 2014 | Radial Velocity | Roque de los Muchachos Observatory | 3.58 m Telescopio Nazionale Galileo | 18.22 day | — | 82.64 Mearth | — | Ruggieri et al. 2024 |
| 2014 | Radial Velocity | Roque de los Muchachos Observatory | 3.58 m Telescopio Nazionale Galileo | 18.16 day | — | 82.64 Mearth | — | Stassun et al. 2017 |
| 2014 | Radial Velocity | Roque de los Muchachos Observatory | 3.58 m Telescopio Nazionale Galileo | 18.16 day | — | 82.31 Mearth | — | Desidera et al. 2014 |