Discovery Method
Radial Velocity
Consistent across records
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ExoplanetDetail
HD 118203 b
Host star HD 118203 • 12.78 R⊕ • 6.13 d orbit
Records
8
archive rows
Discovery
2005
Radial Velocity
Radius
12.78 R⊕
default parameter set
Mass
680.2 M⊕
default parameter set
HD 118203
1361 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: Zhang et al. 2024
Host Star
HD 118203
Stable across source rows
Discovery Year
2005
Stable across source rows
Orbital Period
6.13 day
6.13 to 6.13
Semi-Major Axis
0.07 au
0.07 to 0.09
Radius
12.78 Rearth
12.06 to 13.14
Mass
680.2 Mearth
677 to 886.7
Density
1.79 g/cm**3
1.79 to 2.27
Equilibrium Temperature
1361 K
1360 to 1509
Scale Comparison
Radius against familiar reference worlds
Current adopted radius: 12.78 R⊕ • circles scaled linearly by radius
Earth
1.0 R⊕ baseline
HD 118203 b
12.78 R⊕
Jupiter
11.2 R⊕ reference
Provenance
Underlying measurements and references
Evidence Summary
Rows
8
Refs
8
Methods
1
Discoverystable
Facilitystable
Periodstable
Radiusdisputed
Massdisputed
Eq. Tempdisputed
| Year | Method | Facility | Telescope | Period | Radius | Mass | Eq. Temp | Reference |
|---|---|---|---|---|---|---|---|---|
| 2005 | Radial Velocity | Haute-Provence Observatory | 1.93 m Telescope | 6.13 day | 12.78 Rearth | 680.2 Mearth | 1361 K | Zhang et al. 2024 |
| 2005 | Radial Velocity | Haute-Provence Observatory | 1.93 m Telescope | 6.13 day | 12.55 Rearth | 693.5 Mearth | 1371 K | Maciejewski et al. 2024 |
| 2005 | Radial Velocity | Haute-Provence Observatory | 1.93 m Telescope | 6.13 day | — | 886.7 Mearth | — | Stassun et al. 2017 |
| 2005 | Radial Velocity | Haute-Provence Observatory | 1.93 m Telescope | 6.13 day | 13.14 Rearth | — | 1509 K | ExoFOP |
| 2005 | Radial Velocity | Haute-Provence Observatory | 1.93 m Telescope | 6.13 day | 12.78 Rearth | 689.7 Mearth | — | Knudstrup et al. 2024 |
| 2005 | Radial Velocity | Haute-Provence Observatory | 1.93 m Telescope | 6.13 day | — | 677 Mearth | — | da Silva et al. 2006 |
| 2005 | Radial Velocity | Haute-Provence Observatory | 1.93 m Telescope | 6.13 day | 12.06 Rearth | 725.3 Mearth | 1360 K | Castro-González et al. 2024 |
| 2005 | Radial Velocity | Haute-Provence Observatory | 1.93 m Telescope | 6.13 day | 12.73 Rearth | 688.4 Mearth | 1494 K | Pepper et al. 2020 |