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Proxima Cen d | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/Proxima Cen d

Confirmed exoplanet · Terrestrial

Proxima Cen d

Orbiting Proxima Cen

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 Proxima Cen d — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,025
Method: Radial Velocity
Radius: 0.692 R⊕
Mass: 0.26 M⊕
Orbit: 5.12338 days
Distance: 1.30119 pc

Planet profile

Orbit and physical properties

Orbital period: 5.12338 days
Semi-major axis: 0.02881 AU
Eccentricity: 0
Radius: 0.692 Earth radii
Mass: 0.26 Earth masses
Mass provenance: Msini
Density: 4.31 g/cm³
Equilibrium temperature: 282 K
Insolation: 1.814 Earth flux

Host system

Star and system properties

Host star: Proxima Cen
Stars in system: 3
Known planets in system: 2
Spectral type: M5.5 V
Stellar temperature: 2,900 K
Stellar radius: 0.141 R☉
Stellar mass: 0.1221 M☉
Stellar metallicity: Not reported by the NASA Exoplanet Archive
Stellar age: Not reported by the NASA Exoplanet Archive
Distance: 1.30119 parsecs
Right ascension: 14h29m34.43s
Declination: -62d40m34.26s

Discovery

Detection and provenance

Discovery method: Radial Velocity
Discovery year: 2,025
Publication date: 2025-08
Discovery locale: Ground
Facility: La Silla Observatory
Telescope: 3.6 m ESO Telescope
Instrument: NIRPS Spectrograph
NASA Exoplanet Archive: Open composite record ↗

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