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GJ 9773 b | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/GJ 9773 b

Confirmed exoplanet · Gas Giant

GJ 9773 b

Orbiting GJ 9773

Discovered in 2025 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 9773 b — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,025
Method: Radial Velocity
Radius: 14.2 R⊕
Mass: 172.580825 M⊕
Orbit: 2,965 days
Distance: 15.9211 pc

Planet profile

Orbit and physical properties

Orbital period: 2,965 days
Semi-major axis: 2.921 AU
Eccentricity: 0.218
Radius: 14.2 Earth radii
Mass: 172.580825 Earth masses
Mass provenance: Msini
Density: 0.331 g/cm³
Equilibrium temperature: 59.89 K
Insolation: 0.0021 Earth flux

Host system

Star and system properties

Host star: GJ 9773
Stars in system: 1
Known planets in system: 1
Spectral type: M3.0 V
Stellar temperature: 3,528 K
Stellar radius: 0.362 R☉
Stellar mass: 0.358 M☉
Stellar metallicity: -0.2 dex
Stellar age: Not reported by the NASA Exoplanet Archive
Distance: 15.9211 parsecs
Right ascension: 22h12m36.06s
Declination: +08d33m01.21s

Discovery

Detection and provenance

Discovery method: Radial Velocity
Discovery year: 2,025
Publication date: 2025-08
Discovery locale: Ground
Facility: Calar Alto Observatory
Telescope: 3.5 m telescope
Instrument: CARMENES
NASA Exoplanet Archive: Open composite record ↗

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