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Gliese 48 b | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/Gliese 48 b

Confirmed exoplanet · Neptune Like

Gliese 48 b

Orbiting Gliese 48

Discovered in 2026 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 Gliese 48 b — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,026
Method: Radial Velocity
Radius: 2.77 R⊕
Mass: 8.11 M⊕
Orbit: 39.6299 days
Distance: 8.23366 pc

Planet profile

Orbit and physical properties

Orbital period: 39.6299 days
Semi-major axis: 0.1752 AU
Eccentricity: 0
Radius: 2.77 Earth radii
Mass: 8.11 Earth masses
Mass provenance: Msini
Density: 2.1 g/cm³
Equilibrium temperature: 271 K
Insolation: 0.89 Earth flux

Host system

Star and system properties

Host star: Gliese 48
Stars in system: 1
Known planets in system: 1
Spectral type: M3.5 V
Stellar temperature: 3,450 K
Stellar radius: 0.463 R☉
Stellar mass: 0.47 M☉
Stellar metallicity: Not reported by the NASA Exoplanet Archive
Stellar age: Not reported by the NASA Exoplanet Archive
Distance: 8.23366 parsecs
Right ascension: 01h02m37.98s
Declination: +71d40m41.42s

Discovery

Detection and provenance

Discovery method: Radial Velocity
Discovery year: 2,026
Publication date: 2026-06
Discovery locale: Ground
Facility: Multiple Observatories
Telescope: Multiple Telescopes
Instrument: Multiple Instruments
NASA Exoplanet Archive: Open composite record ↗

Visual archive

Gallery

One image from Gliese 48 b.

Generic neptune like catalog artwork; not a direct image of Gliese 48 b — Apex Andromeda catalog artwork