Discovery Method
Transit
Consistent across records
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ExoplanetDetail
XO-5 b
Host star XO-5 • 12.78 R⊕ • 4.19 d orbit
Records
11
archive rows
Discovery
2008
Transit
Radius
12.78 R⊕
default parameter set
Mass
378.2 M⊕
default parameter set
XO-5
1230 K equilibrium
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: Smith 2015
Host Star
XO-5
Stable across source rows
Discovery Year
2008
Stable across source rows
Orbital Period
4.19 day
4.19 to 4.19
Semi-Major Axis
0.05 au
0.05 to 0.05
Radius
12.78 Rearth
11.77 to 12.89
Mass
378.2 Mearth
331.8 to 378.2
Density
1.06 g/cm**3
0.95 to 1.12
Equilibrium Temperature
1230 K
1138.8 to 1244
Scale Comparison
Radius against familiar reference worlds
Current adopted radius: 12.78 R⊕ • circles scaled linearly by radius
Earth
1.0 R⊕ baseline
XO-5 b
12.78 R⊕
Jupiter
11.2 R⊕ reference
Provenance
Underlying measurements and references
Evidence Summary
Rows
11
Refs
11
Methods
1
Discoverystable
Facilitystable
Periodstable
Radiusdisputed
Massdisputed
Eq. Tempdisputed
| Year | Method | Facility | Telescope | Period | Radius | Mass | Eq. Temp | Reference |
|---|---|---|---|---|---|---|---|---|
| 2008 | Transit | XO | Canon 200mm f/1.8L | — | — | 334.0 Mearth | — | Knutson et al. 2014 |
| 2008 | Transit | XO | Canon 200mm f/1.8L | 4.19 day | 12.78 Rearth | 378.2 Mearth | 1230 K | Smith 2015 |
| 2008 | Transit | XO | Canon 200mm f/1.8L | 4.19 day | 11.77 Rearth | — | 1138.8 K | ExoFOP |
| 2008 | Transit | XO | Canon 200mm f/1.8L | 4.19 day | 12.21 Rearth | 344.5 Mearth | 1203 K | Southworth 2010 |
| 2008 | Transit | XO | Canon 200mm f/1.8L | 4.19 day | — | — | — | Kokori et al. 2023 |
| 2008 | Transit | XO | Canon 200mm f/1.8L | 4.19 day | — | — | — | Ivshina & Winn 2022 |
| 2008 | Transit | XO | Canon 200mm f/1.8L | 4.19 day | 12.43 Rearth | 336.6 Mearth | — | Pal et al. 2009 |
| 2008 | Transit | XO | Canon 200mm f/1.8L | 4.19 day | 12.89 Rearth | 365.5 Mearth | 1244 K | Burke et al. 2008 |
| 2008 | Transit | XO | Canon 200mm f/1.8L | 4.19 day | — | 331.8 Mearth | — | Ment et al. 2018 |
| 2008 | Transit | XO | Canon 200mm f/1.8L | 4.19 day | — | — | — | Kokori et al. 2022 |
| 2008 | Transit | XO | Canon 200mm f/1.8L | 4.19 day | 12.43 Rearth | 332.5 Mearth | — | Bonomo et al. 2017 |