Proxima Cen d · Asteria Star

Scientific overview

Proxima Cen d is a terrestrial planet orbiting Proxima Cen, completing an orbit every 5 days, about 4 light-years from Earth. It was discovered in 2025 using the radial velocity method.

Host star

Proxima Centauri

Spectral type

M5.5 V

Temperature

2,900 K

Mass

0.122 M☉

Planetary system — Proxima Cen system

View the Proxima Cen system (2 known planets).

Planet	Class	Radius (R⊕)	Period (d)	Distance (ly)
Proxima Cen dRadial Velocity · 2025	Terrestrial planet	0.69	5.1234	4
Proxima Cen bRadial Velocity · 2016	Terrestrial planet	1.02	11.1847	4

Discovery and detection

Detection method

Radial Velocity Method

Discovery year

2025

Discovered at

La Silla Observatory

Knowledge connections

OrbitsProxima Centauri
Member of systemProxima Cen system
Discovered by methodRadial Velocity Method
Discovered atLa Silla Observatory
Catalogued inNASA Exoplanet Archive

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