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HD 13931 b | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/HD 13931 b

Confirmed exoplanet · Gas Giant

HD 13931 b

Orbiting HD 13931

Discovered in 2009 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 13931 b — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,009
Method: Radial Velocity
Radius: 13.2 R⊕
Mass: 889.91954 M⊕
Orbit: 4,218 days
Distance: 47.3963 pc

Planet profile

Orbit and physical properties

Orbital period: 4,218 days
Semi-major axis: 5.15 AU
Eccentricity: 0.02
Radius: 13.2 Earth radii
Mass: 889.91954 Earth masses
Mass provenance: Mass
Density: 2.13 g/cm³
Equilibrium temperature: 139.38 K
Insolation: 0.0592 Earth flux

Host system

Star and system properties

Host star: HD 13931
Stars in system: 1
Known planets in system: 1
Spectral type: G0
Stellar temperature: 5,867 K
Stellar radius: 1.25 R☉
Stellar mass: 1.3 M☉
Stellar metallicity: 0.05 dex
Stellar age: 8.4 Gyr
Distance: 47.3963 parsecs
Right ascension: 02h16m47.52s
Declination: +43d46m19.94s

Discovery

Detection and provenance

Discovery method: Radial Velocity
Discovery year: 2,009
Publication date: 2010-10
Discovery locale: Ground
Facility: W. M. Keck Observatory
Telescope: 10 m Keck I Telescope
Instrument: HIRES Spectrometer
NASA Exoplanet Archive: Open composite record ↗

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