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GJ 3988 b | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/GJ 3988 b

Confirmed exoplanet · Super Earth

GJ 3988 b

Orbiting GJ 3988

Discovered in 2023 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 3988 b — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,023
Method: Radial Velocity
Radius: 1.74 R⊕
Mass: 3.69 M⊕
Orbit: 6.9442 days
Distance: 9.9105 pc

Planet profile

Orbit and physical properties

Orbital period: 6.9442 days
Semi-major axis: 0.0405 AU
Eccentricity: 0
Radius: 1.74 Earth radii
Mass: 3.69 Earth masses
Mass provenance: Msini
Density: 3.85 g/cm³
Equilibrium temperature: 348 K
Insolation: 2.45 Earth flux

Host system

Star and system properties

Host star: GJ 3988
Stars in system: 1
Known planets in system: 1
Spectral type: M4.5 V
Stellar temperature: 3,273 K
Stellar radius: 0.19734 R☉
Stellar mass: 0.1842 M☉
Stellar metallicity: -0.12 dex
Stellar age: Not reported by the NASA Exoplanet Archive
Distance: 9.9105 parsecs
Right ascension: 17h03m24.09s
Declination: +51d24m32.33s

Discovery

Detection and provenance

Discovery method: Radial Velocity
Discovery year: 2,023
Publication date: 2023-12
Discovery locale: Ground
Facility: Calar Alto Observatory
Telescope: 3.5 m telescope
Instrument: CARMENES
NASA Exoplanet Archive: Open composite record ↗

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