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HD 204941 b | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/HD 204941 b

Confirmed exoplanet · Gas Giant

HD 204941 b

Orbiting HD 204941

Discovered in 2011 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 204941 b — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,011
Method: Radial Velocity
Radius: 10.1 R⊕
Mass: 73.1009 M⊕
Orbit: 1,733 days
Distance: 28.7165 pc

Planet profile

Orbit and physical properties

Orbital period: 1,733 days
Semi-major axis: 2.55 AU
Eccentricity: 0.37
Radius: 10.1 Earth radii
Mass: 73.1009 Earth masses
Mass provenance: Msini
Density: 0.39 g/cm³
Equilibrium temperature: 134.04 K
Insolation: 0.0477 Earth flux

Host system

Star and system properties

Host star: HD 204941
Stars in system: 2
Known planets in system: 1
Spectral type: K1/2V
Stellar temperature: 5,026 K
Stellar radius: 0.78 R☉
Stellar mass: 0.58 M☉
Stellar metallicity: -0.19 dex
Stellar age: 6.67 Gyr
Distance: 28.7165 parsecs
Right ascension: 21h32m23.20s
Declination: -20d57m28.65s

Discovery

Detection and provenance

Discovery method: Radial Velocity
Discovery year: 2,011
Publication date: 2011-11
Discovery locale: Ground
Facility: La Silla Observatory
Telescope: 3.6 m ESO Telescope
Instrument: HARPS Spectrograph
NASA Exoplanet Archive: Open composite record ↗

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