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HD 66428 b | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/HD 66428 b

Confirmed exoplanet · Gas Giant

HD 66428 b

Orbiting HD 66428

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 66428 b — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,005
Method: Radial Velocity
Radius: 12.4 R⊕
Mass: 3,478.949743 M⊕
Orbit: 2,269.81726 days
Distance: 53.2817 pc

Planet profile

Orbit and physical properties

Orbital period: 2,269.81726 days
Semi-major axis: 3.395 AU
Eccentricity: 0.471
Radius: 12.4 Earth radii
Mass: 3,478.949743 Earth masses
Mass provenance: Mass
Density: 10 g/cm³
Equilibrium temperature: 159.02 K
Insolation: 0.1082 Earth flux

Host system

Star and system properties

Host star: HD 66428
Stars in system: 1
Known planets in system: 2
Spectral type: G8 IV (+ G)
Stellar temperature: 5,716 K
Stellar radius: 1.13 R☉
Stellar mass: 1.01 M☉
Stellar metallicity: 0.23 dex
Stellar age: 3.515 Gyr
Distance: 53.2817 parsecs
Right ascension: 08h03m28.60s
Declination: -01d09m48.97s

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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