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HD 9446 b | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/HD 9446 b

Confirmed exoplanet · Gas Giant

HD 9446 b

Orbiting HD 9446

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 9446 b — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,009
Method: Radial Velocity
Radius: 14 R⊕
Mass: 222.472 M⊕
Orbit: 30.052 days
Distance: 50.3503 pc

Planet profile

Orbit and physical properties

Orbital period: 30.052 days
Semi-major axis: 0.189 AU
Eccentricity: 0.2
Radius: 14 Earth radii
Mass: 222.472 Earth masses
Mass provenance: Msini
Density: 0.446 g/cm³
Equilibrium temperature: 642.55 K
Insolation: 30.7942 Earth flux

Host system

Star and system properties

Host star: HD 9446
Stars in system: 1
Known planets in system: 2
Spectral type: G5 V
Stellar temperature: 5,793 K
Stellar radius: 1 R☉
Stellar mass: 1 M☉
Stellar metallicity: 0.09 dex
Stellar age: Not reported by the NASA Exoplanet Archive
Distance: 50.3503 parsecs
Right ascension: 01h33m20.41s
Declination: +29d15m53.71s

Discovery

Detection and provenance

Discovery method: Radial Velocity
Discovery year: 2,009
Publication date: 2010-04
Discovery locale: Ground
Facility: Haute-Provence Observatory
Telescope: 1.93 m Telescope
Instrument: SOPHIE Spectrograph
NASA Exoplanet Archive: Open composite record ↗

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