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GJ 15 A b | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/GJ 15 A b

Confirmed exoplanet · Super Earth

GJ 15 A b

Orbiting GJ 15 A

Discovered in 2014 using Radial Velocity. This page reflects the latest synchronized NASA Exoplanet Archive composite record.

NASA Archive record ↗Back to catalog →

Generic super earth catalog artwork; not a direct image of GJ 15 A b — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,014
Method: Radial Velocity
Radius: 1.55 R⊕
Mass: 3.03 M⊕
Orbit: 11.4407 days
Distance: 3.56228 pc

Planet profile

Orbit and physical properties

Orbital period: 11.4407 days
Semi-major axis: 0.072 AU
Eccentricity: 0.094
Radius: 1.55 Earth radii
Mass: 3.03 Earth masses
Mass provenance: Msini
Density: 4.47 g/cm³
Equilibrium temperature: 550 K
Insolation: 4.2691 Earth flux

Host system

Star and system properties

Host star: GJ 15 A
Stars in system: 2
Known planets in system: 2
Spectral type: M1
Stellar temperature: 3,607 K
Stellar radius: 0.38 R☉
Stellar mass: 0.38 M☉
Stellar metallicity: -0.34 dex
Stellar age: Not reported by the NASA Exoplanet Archive
Distance: 3.56228 parsecs
Right ascension: 00h18m27.04s
Declination: +44d01m29.03s

Discovery

Detection and provenance

Discovery method: Radial Velocity
Discovery year: 2,014
Publication date: 2014-10
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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