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Barnard d | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/Barnard d

Confirmed exoplanet · Terrestrial

Barnard d

Orbiting Barnard's star

Discovered in 2025 using Radial Velocity. This page reflects the latest synchronized NASA Exoplanet Archive composite record.

NASA Archive record ↗Back to catalog →

Generic terrestrial catalog artwork; not a direct image of Barnard d — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,025
Method: Radial Velocity
Radius: 0.694 R⊕
Mass: 0.263 M⊕
Orbit: 2.3402 days
Distance: 1.82655 pc

Planet profile

Orbit and physical properties

Orbital period: 2.3402 days
Semi-major axis: 0.0188 AU
Eccentricity: 0.04
Radius: 0.694 Earth radii
Mass: 0.263 Earth masses
Mass provenance: Msini
Density: 4.32 g/cm³
Equilibrium temperature: 483 K
Insolation: 10.0441 Earth flux

Host system

Star and system properties

Host star: Barnard's star
Stars in system: 1
Known planets in system: 4
Spectral type: M3.5-4 V
Stellar temperature: 3,195 K
Stellar radius: 0.185 R☉
Stellar mass: 0.162 M☉
Stellar metallicity: -0.56 dex
Stellar age: Not reported by the NASA Exoplanet Archive
Distance: 1.82655 parsecs
Right ascension: 17h57m47.67s
Declination: +04d44m16.73s

Discovery

Detection and provenance

Discovery method: Radial Velocity
Discovery year: 2,025
Publication date: 2025-03
Discovery locale: Ground
Facility: Gemini Observatory
Telescope: 8.19 m Gemini North Telescope
Instrument: MAROON-X
NASA Exoplanet Archive: Open composite record ↗

Visual archive

Gallery

One image from Barnard d.

Generic terrestrial catalog artwork; not a direct image of Barnard d — Apex Andromeda catalog artwork