Barnard d · Asteria Star

Scientific overview

Barnard d is a terrestrial planet orbiting Barnard's star, completing an orbit every 2 days, about 6 light-years from Earth. It was discovered in 2025 using the radial velocity method.

Host star

Barnard's Star

Spectral type

M3.5-4 V

Temperature

3,195 K

Mass

0.162 M☉

Planetary system — Barnard's star system

View the Barnard's star system (4 known planets).

Planet	Class	Radius (R⊕)	Period (d)	Distance (ly)
Barnard dRadial Velocity · 2025	Terrestrial planet	0.69	2.3402	6
Barnard bRadial Velocity · 2024	Terrestrial planet	0.72	3.1542	6
Barnard cRadial Velocity · 2025	Terrestrial planet	0.74	4.1244	6
Barnard eRadial Velocity · 2025	Terrestrial planet	0.64	6.7392	6

Discovery and detection

Detection method

Radial Velocity Method

Discovery year

2025

Discovered at

Gemini Observatory

Knowledge connections

OrbitsBarnard's Star
Member of systemBarnard's star system
Discovered by methodRadial Velocity Method
Discovered atGemini Observatory
Catalogued inNASA Exoplanet Archive

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