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HD 220689 b | Exoplanets | Apex Andromeda | Apex Andromeda

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Planets/Exoplanets/HD 220689 b

Confirmed exoplanet · Gas Giant

HD 220689 b

Orbiting HD 220689

Discovered in 2012 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 220689 b — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,012
Method: Radial Velocity
Radius: 13.7 R⊕
Mass: 381.394088 M⊕
Orbit: 2,266.4 days
Distance: 46.8778 pc

Planet profile

Orbit and physical properties

Orbital period: 2,266.4 days
Semi-major axis: 3.396 AU
Eccentricity: 0.054
Radius: 13.7 Earth radii
Mass: 381.394088 Earth masses
Mass provenance: Mass
Density: 0.815 g/cm³
Equilibrium temperature: 160.11 K
Insolation: 0.1074 Earth flux

Host system

Star and system properties

Host star: HD 220689
Stars in system: 1
Known planets in system: 1
Spectral type: G3 V
Stellar temperature: 5,921 K
Stellar radius: 1.068 R☉
Stellar mass: 1.016 M☉
Stellar metallicity: -0.07 dex
Stellar age: 4.586 Gyr
Distance: 46.8778 parsecs
Right ascension: 23h25m52.97s
Declination: -20d37m00.45s

Discovery

Detection and provenance

Discovery method: Radial Velocity
Discovery year: 2,012
Publication date: 2013-03
Discovery locale: Ground
Facility: La Silla Observatory
Telescope: 1.2 m Leonhard Euler Telescope
Instrument: CORALIE Spectrograph
NASA Exoplanet Archive: Open composite record ↗

Visual archive

Gallery

One image from HD 220689 b.

Generic gas giant catalog artwork; not a direct image of HD 220689 b — Apex Andromeda catalog artwork