Discovery Method
Radial Velocity
Consistent across records
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ExoplanetDetail
HD 17156 b
Host star HD 17156 • 12.26 R⊕ • 21.22 d orbit
Records
11
archive rows
Discovery
2007
Radial Velocity
Radius
12.26 R⊕
default parameter set
Mass
1036.1 M⊕
default parameter set
HD 17156
888 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: Kane et al. 2023
Host Star
HD 17156
Stable across source rows
Discovery Year
2007
Stable across source rows
Orbital Period
21.22 day
21.20 to 21.22
Semi-Major Axis
0.16 au
0.15 to 0.16
Radius
12.26 Rearth
11.43 to 13.14
Mass
1036.1 Mearth
991.6 to 1115.6
Density
3.08 g/cm**3
3.08 to 3.78
Equilibrium Temperature
888 K
581 to 888
Scale Comparison
Radius against familiar reference worlds
Current adopted radius: 12.26 R⊕ • circles scaled linearly by radius
Earth
1.0 R⊕ baseline
HD 17156 b
12.26 R⊕
Jupiter
11.2 R⊕ reference
Provenance
Underlying measurements and references
Evidence Summary
Rows
11
Refs
11
Methods
1
Discoverystable
Facilitystable
Perioddisputed
Radiusdisputed
Massdisputed
Eq. Tempdisputed
| Year | Method | Facility | Telescope | Period | Radius | Mass | Eq. Temp | Reference |
|---|---|---|---|---|---|---|---|---|
| 2007 | Radial Velocity | Subaru Telescope | 8.2 m Subaru Telescope | 21.22 day | 12.33 Rearth | 1115.6 Mearth | — | Stassun et al. 2017 |
| 2007 | Radial Velocity | Subaru Telescope | 8.2 m Subaru Telescope | 21.20 day | — | 991.6 Mearth | — | Fischer et al. 2007 |
| 2007 | Radial Velocity | Subaru Telescope | 8.2 m Subaru Telescope | 21.22 day | — | 1004.3 Mearth | — | Ment et al. 2018 |
| 2007 | Radial Velocity | Subaru Telescope | 8.2 m Subaru Telescope | 21.22 day | 12.18 Rearth | 1028.2 Mearth | — | Bonomo et al. 2017 |
| 2007 | Radial Velocity | Subaru Telescope | 8.2 m Subaru Telescope | 21.22 day | 12.27 Rearth | 1014.2 Mearth | — | Nutzman et al. 2011 |
| 2007 | Radial Velocity | Subaru Telescope | 8.2 m Subaru Telescope | 21.22 day | — | — | — | Ivshina & Winn 2022 |
| 2007 | Radial Velocity | Subaru Telescope | 8.2 m Subaru Telescope | 21.22 day | 13.14 Rearth | — | 581 K | ExoFOP |
| 2007 | Radial Velocity | Subaru Telescope | 8.2 m Subaru Telescope | 21.22 day | 11.94 Rearth | 1036.8 Mearth | 883 K | Southworth 2011 |
| 2007 | Radial Velocity | Subaru Telescope | 8.2 m Subaru Telescope | 21.22 day | — | — | — | Kokori et al. 2023 |
| 2007 | Radial Velocity | Subaru Telescope | 8.2 m Subaru Telescope | 21.22 day | 12.26 Rearth | 1036.1 Mearth | 888 K | Kane et al. 2023 |
| 2007 | Radial Velocity | Subaru Telescope | 8.2 m Subaru Telescope | 21.22 day | 11.43 Rearth | 1023.4 Mearth | — | Barbieri et al. 2009 |