Mini-Neptune · GJ 229
GJ 229 b
ExoplanetsDiscovered 2014
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
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