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GJ 9689 b | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/GJ 9689 b

Confirmed exoplanet · Neptune Like

GJ 9689 b

Orbiting GJ 9689

Discovered in 2020 using Radial Velocity. This page reflects the latest synchronized NASA Exoplanet Archive composite record.

NASA Archive record ↗Back to catalog →

Generic neptune like catalog artwork; not a direct image of GJ 9689 b — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,020
Method: Radial Velocity
Radius: 3.07 R⊕
Mass: 9.65 M⊕
Orbit: 18.27 days
Distance: 30.6203 pc

Planet profile

Orbit and physical properties

Orbital period: 18.27 days
Semi-major axis: 0.1139 AU
Eccentricity: 0.29
Radius: 3.07 Earth radii
Mass: 9.65 Earth masses
Mass provenance: Msini
Density: 1.83 g/cm³
Equilibrium temperature: 453.04 K
Insolation: 4.8635 Earth flux

Host system

Star and system properties

Host star: GJ 9689
Stars in system: 1
Known planets in system: 1
Spectral type: M0.5
Stellar temperature: 3,836 K
Stellar radius: 0.57 R☉
Stellar mass: 0.59 M☉
Stellar metallicity: 0.05 dex
Stellar age: 8.9 Gyr
Distance: 30.6203 parsecs
Right ascension: 20h13m52.26s
Declination: +13d23m20.01s

Discovery

Detection and provenance

Discovery method: Radial Velocity
Discovery year: 2,020
Publication date: 2021-07
Discovery locale: Ground
Facility: Roque de los Muchachos Observatory
Telescope: 3.58 m Telescopio Nazionale Galileo
Instrument: HARPS-N Spectrograph
NASA Exoplanet Archive: Open composite record ↗

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