GJ 229 b · Asteria Star

Scientific overview

GJ 229 b is a mini-neptune orbiting GJ 229, completing an orbit every 579 days, about 19 light-years from Earth. It was discovered in 2014 using the radial velocity method.

Host star

GJ 229

Spectral type

M1.5V

Temperature

3,564 K

Mass

0.509 M☉

Planetary system — GJ 229 system

View the GJ 229 system (2 known planets).

Planet	Class	Radius (R⊕)	Period (d)	Distance (ly)
GJ 229 A cRadial Velocity · 2020	Mini-Neptune	2.87	122	19
GJ 229 bRadial Velocity · 2014	Mini-Neptune	3.97	579	19

Discovery and detection

Detection method

Radial Velocity Method

Discovery year

2014

Knowledge connections

OrbitsGJ 229
Member of systemGJ 229 system
Discovered by methodRadial Velocity Method
Catalogued inNASA Exoplanet Archive

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