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HD 28678 b | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/HD 28678 b

Confirmed exoplanet · Gas Giant

HD 28678 b

Orbiting HD 28678

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 28678 b — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,011
Method: Radial Velocity
Radius: 13.5 R⊕
Mass: 490.09386 M⊕
Orbit: 380.2 days
Distance: 189.908 pc

Planet profile

Orbit and physical properties

Orbital period: 380.2 days
Semi-major axis: 1.18 AU
Eccentricity: 0.149
Radius: 13.5 Earth radii
Mass: 490.09386 Earth masses
Mass provenance: Msini
Density: 1.09 g/cm³
Equilibrium temperature: 561.84 K
Insolation: 16.4464 Earth flux

Host system

Star and system properties

Host star: HD 28678
Stars in system: 1
Known planets in system: 1
Spectral type: G8 IV
Stellar temperature: 4,972 K
Stellar radius: 6.48 R☉
Stellar mass: 1.53 M☉
Stellar metallicity: -0.11 dex
Stellar age: 1.8 Gyr
Distance: 189.908 parsecs
Right ascension: 04h31m25.46s
Declination: +04d34m30.90s

Discovery

Detection and provenance

Discovery method: Radial Velocity
Discovery year: 2,011
Publication date: 2011-12
Discovery locale: Ground
Facility: W. M. Keck Observatory
Telescope: 10 m Keck I Telescope
Instrument: HIRES Spectrometer
NASA Exoplanet Archive: Open composite record ↗

Visual archive

Gallery

One image from HD 28678 b.

Generic gas giant catalog artwork; not a direct image of HD 28678 b — Apex Andromeda catalog artwork