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GJ 229 b | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/GJ 229 b

Confirmed exoplanet · Neptune Like

GJ 229 b

Orbiting GJ 229

Discovered in 2014 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 229 b — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,014
Method: Radial Velocity
Radius: 3.97 R⊕
Mass: 14.937935 M⊕
Orbit: 579.47495 days
Distance: 5.75624 pc

Planet profile

Orbit and physical properties

Orbital period: 579.47495 days
Semi-major axis: 1.086 AU
Eccentricity: 0.404
Radius: 3.97 Earth radii
Mass: 14.937935 Earth masses
Mass provenance: Msini
Density: 1.31 g/cm³
Equilibrium temperature: 111.85 K
Insolation: 0.0237 Earth flux

Host system

Star and system properties

Host star: GJ 229
Stars in system: 3
Known planets in system: 2
Spectral type: M1.5V
Stellar temperature: 3,564 K
Stellar radius: 0.46 R☉
Stellar mass: 0.509 M☉
Stellar metallicity: Not reported by the NASA Exoplanet Archive
Stellar age: 0.4 Gyr
Distance: 5.75624 parsecs
Right ascension: 06h10m34.46s
Declination: -21d52m03.80s

Discovery

Detection and provenance

Discovery method: Radial Velocity
Discovery year: 2,014
Publication date: 2014-06
Discovery locale: Ground
Facility: Multiple Observatories
Telescope: Multiple Telescopes
Instrument: Multiple Instruments
NASA Exoplanet Archive: Open composite record ↗

Visual archive

Gallery

One image from GJ 229 b.

Generic neptune like catalog artwork; not a direct image of GJ 229 b — Apex Andromeda catalog artwork