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GJ 317 b | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/GJ 317 b

Confirmed exoplanet · Gas Giant

GJ 317 b

Orbiting GJ 317

Discovered in 2007 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 GJ 317 b — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,007
Method: Radial Velocity
Radius: 13.3 R⊕
Mass: 794.5 M⊕
Orbit: 695.69 days
Distance: 15.1968 pc

Planet profile

Orbit and physical properties

Orbital period: 695.69 days
Semi-major axis: 1.138 AU
Eccentricity: 0.0826
Radius: 13.3 Earth radii
Mass: 794.5 Earth masses
Mass provenance: Mass
Density: 1.86 g/cm³
Equilibrium temperature: 100.32 K
Insolation: 0.0159 Earth flux

Host system

Star and system properties

Host star: GJ 317
Stars in system: 1
Known planets in system: 2
Spectral type: M3.5 V
Stellar temperature: 3,496 K
Stellar radius: 0.403 R☉
Stellar mass: 0.402 M☉
Stellar metallicity: -0.02 dex
Stellar age: 5 Gyr
Distance: 15.1968 parsecs
Right ascension: 08h40m58.69s
Declination: -23d27m10.11s

Discovery

Detection and provenance

Discovery method: Radial Velocity
Discovery year: 2,007
Publication date: 2007-11
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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