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Missions Planets Black Holes 3D Map Agencies Blog About apexandromeda.com

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HD 205739 b | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/HD 205739 b

Confirmed exoplanet · Gas Giant

HD 205739 b

Orbiting HD 205739

Discovered in 2008 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 205739 b — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,008
Method: Radial Velocity
Radius: 13.6 R⊕
Mass: 435.41 M⊕
Orbit: 279.8 days
Distance: 92.5087 pc

Planet profile

Orbit and physical properties

Orbital period: 279.8 days
Semi-major axis: 0.896 AU
Eccentricity: 0.27
Radius: 13.6 Earth radii
Mass: 435.41 Earth masses
Mass provenance: Msini
Density: 0.951 g/cm³
Equilibrium temperature: 362.84 K
Insolation: 2.8535 Earth flux

Host system

Star and system properties

Host star: HD 205739
Stars in system: 1
Known planets in system: 1
Spectral type: F7 V
Stellar temperature: 6,176 K
Stellar radius: 1.33 R☉
Stellar mass: 1.22 M☉
Stellar metallicity: 0.19 dex
Stellar age: 2.84 Gyr
Distance: 92.5087 parsecs
Right ascension: 21h38m08.43s
Declination: -31d44m16.21s

Discovery

Detection and provenance

Discovery method: Radial Velocity
Discovery year: 2,008
Publication date: 2008-11
Discovery locale: Ground
Facility: Las Campanas Observatory
Telescope: 6.5 m Magellan II Clay Telescope
Instrument: MIKE Spectrograph
NASA Exoplanet Archive: Open composite record ↗

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