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HD 4917 b | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/HD 4917 b

Confirmed exoplanet · Gas Giant

HD 4917 b

Orbiting HD 4917

Discovered in 2018 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 4917 b — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,018
Method: Radial Velocity
Radius: 13.5 R⊕
Mass: 513.29545 M⊕
Orbit: 400.5 days
Distance: 204.277 pc

Planet profile

Orbit and physical properties

Orbital period: 400.5 days
Semi-major axis: 1.167 AU
Eccentricity: 0.066
Radius: 13.5 Earth radii
Mass: 513.29545 Earth masses
Mass provenance: Msini
Density: 1.15 g/cm³
Equilibrium temperature: 479.78 K
Insolation: 20.9781 Earth flux

Host system

Star and system properties

Host star: HD 4917
Stars in system: 1
Known planets in system: 1
Spectral type: K0 III/IV
Stellar temperature: 4,802 K
Stellar radius: 5.01 R☉
Stellar mass: 1.32 M☉
Stellar metallicity: 0.18 dex
Stellar age: Not reported by the NASA Exoplanet Archive
Distance: 204.277 parsecs
Right ascension: 00h51m06.30s
Declination: -12d55m39.59s

Discovery

Detection and provenance

Discovery method: Radial Velocity
Discovery year: 2,018
Publication date: 2019-04
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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