GJ 251 b · Asteria Star

Scientific overview

GJ 251 b is a super-earth orbiting GJ 251, completing an orbit every 14 days, about 18 light-years from Earth. It was discovered in 2020 using the radial velocity method.

Host star

GJ 251

Spectral type

M3.0 V

Temperature

3,342 K

Mass

0.35 M☉

Planetary system — GJ 251 system

View the GJ 251 system (2 known planets).

Planet	Class	Radius (R⊕)	Period (d)	Distance (ly)
GJ 251 bRadial Velocity · 2020	Super-Earth	1.79	14.237	18
GJ 251 cRadial Velocity · 2025	Super-Earth	1.8	53.647	18

Discovery and detection

Detection method

Radial Velocity Method

Discovery year

2020

Discovered at

W. M. Keck Observatory

Knowledge connections

OrbitsGJ 251
Member of systemGJ 251 system
Discovered by methodRadial Velocity Method
Discovered atW. M. Keck Observatory
Catalogued inNASA Exoplanet Archive

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