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HD 217107 b | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/HD 217107 b

Confirmed exoplanet · Gas Giant

HD 217107 b

Orbiting HD 217107

Discovered in 1998 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 217107 b — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 1,998
Method: Radial Velocity
Radius: 13.6 R⊕
Mass: 459.579877 M⊕
Orbit: 7.127017 days
Distance: 20.0619 pc

Planet profile

Orbit and physical properties

Orbital period: 7.127017 days
Semi-major axis: 0.07359 AU
Eccentricity: 0.1284
Radius: 13.6 Earth radii
Mass: 459.579877 Earth masses
Mass provenance: Mass
Density: 1 g/cm³
Equilibrium temperature: 1,105.84 K
Insolation: 231.1546 Earth flux

Host system

Star and system properties

Host star: HD 217107
Stars in system: 1
Known planets in system: 2
Spectral type: G
Stellar temperature: 5,622 K
Stellar radius: 1.2245 R☉
Stellar mass: 1.045 M☉
Stellar metallicity: 0.37 dex
Stellar age: 11.9 Gyr
Distance: 20.0619 parsecs
Right ascension: 22h58m15.53s
Declination: -02d23m43.62s

Discovery

Detection and provenance

Discovery method: Radial Velocity
Discovery year: 1,998
Publication date: 1999-01
Discovery locale: Ground
Facility: Lick Observatory
Telescope: 3.0 m C. Donald Shane Telescope
Instrument: Hamilton Echelle Spectrograph
NASA Exoplanet Archive: Open composite record ↗

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