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HD 99109 b | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/HD 99109 b

Confirmed exoplanet · Gas Giant

HD 99109 b

Orbiting HD 99109

Discovered in 2005 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 99109 b — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,005
Method: Radial Velocity
Radius: 14.3 R⊕
Mass: 139.8452 M⊕
Orbit: 439.29999 days
Distance: 54.7901 pc

Planet profile

Orbit and physical properties

Orbital period: 439.29999 days
Semi-major axis: 1.11 AU
Eccentricity: 0.09
Radius: 14.3 Earth radii
Mass: 139.8452 Earth masses
Mass provenance: Msini
Density: 0.263 g/cm³
Equilibrium temperature: 239.32 K
Insolation: 0.5465 Earth flux

Host system

Star and system properties

Host star: HD 99109
Stars in system: 1
Known planets in system: 1
Spectral type: G8/K0 IV
Stellar temperature: 5,282 K
Stellar radius: 0.98 R☉
Stellar mass: 0.76 M☉
Stellar metallicity: 0.35 dex
Stellar age: 1 Gyr
Distance: 54.7901 parsecs
Right ascension: 11h24m17.17s
Declination: -01d31m47.14s

Discovery

Detection and provenance

Discovery method: Radial Velocity
Discovery year: 2,005
Publication date: 2006-07
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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