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HD 17156 b | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/HD 17156 b

Confirmed exoplanet · Gas Giant

HD 17156 b

Orbiting HD 17156

Discovered in 2007 using Radial Velocity. This page reflects the latest synchronized NASA Exoplanet Archive composite record.

NASA Archive record ↗Back to catalog →

Generic gas giant catalog artwork; not a direct image of HD 17156 b — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,007
Method: Radial Velocity
Radius: 12.262625 R⊕
Mass: 1,036.120607 M⊕
Orbit: 21.216429 days
Distance: 78.0863 pc

Planet profile

Orbit and physical properties

Orbital period: 21.216429 days
Semi-major axis: 0.1632 AU
Eccentricity: 0.6772
Radius: 12.262625 Earth radii
Mass: 1,036.120607 Earth masses
Mass provenance: Mass
Density: 3.08 g/cm³
Equilibrium temperature: 888 K
Insolation: 68.8 Earth flux

Host system

Star and system properties

Host star: HD 17156
Stars in system: 1
Known planets in system: 1
Spectral type: G5
Stellar temperature: 6,046 K
Stellar radius: 1.517 R☉
Stellar mass: 1.285 M☉
Stellar metallicity: 0.208 dex
Stellar age: 3.3 Gyr
Distance: 78.0863 parsecs
Right ascension: 02h49m44.79s
Declination: +71d45m11.12s

Discovery

Detection and provenance

Discovery method: Radial Velocity
Discovery year: 2,007
Publication date: 2007-11
Discovery locale: Ground
Facility: Subaru Telescope
Telescope: 8.2 m Subaru Telescope
Instrument: HDS Spectrograph
NASA Exoplanet Archive: Open composite record ↗

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