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GJ 4276 b | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/GJ 4276 b

Confirmed exoplanet · Neptune Like

GJ 4276 b

Orbiting GJ 4276

Discovered in 2019 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 4276 b — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,019
Method: Radial Velocity
Radius: 4.22 R⊕
Mass: 16.57 M⊕
Orbit: 13.352 days
Distance: 21.3362 pc

Planet profile

Orbit and physical properties

Orbital period: 13.352 days
Semi-major axis: 0.082 AU
Eccentricity: 0.37
Radius: 4.22 Earth radii
Mass: 16.57 Earth masses
Mass provenance: Msini
Density: 1.21 g/cm³
Equilibrium temperature: 363.86 K
Insolation: 2.9298 Earth flux

Host system

Star and system properties

Host star: GJ 4276
Stars in system: 1
Known planets in system: 1
Spectral type: M4.0
Stellar temperature: 3,387 K
Stellar radius: 0.407 R☉
Stellar mass: 0.406 M☉
Stellar metallicity: 0.12 dex
Stellar age: 6.9 Gyr
Distance: 21.3362 parsecs
Right ascension: 22h25m17.31s
Declination: +59d24m45.01s

Discovery

Detection and provenance

Discovery method: Radial Velocity
Discovery year: 2,019
Publication date: 2019-02
Discovery locale: Ground
Facility: Calar Alto Observatory
Telescope: 3.5 m telescope
Instrument: CARMENES
NASA Exoplanet Archive: Open composite record ↗

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