Exoplanet
GJ 229 b
18.77 light-years
The archive flags this planet’s confirmation as questioned in the literature.
- Discovery
- Radial Velocity · 2014
- Radius
- 3.97 Earth radii
- Mass
- 14.9379 (+0.9535 / −1.2713) Earth masses
- Orbital period
- 579.475 (+1.6794 / −1.4141) days
- Semi-major axis
- 1.086 (+0.015 / −0.015) AU
- Equilibrium temperature
- 111.85 K
- Mass provenance
- Msini
Measurements may come from different studies and need not form one self-consistent model. “Msini” is a minimum mass; a mass inferred from radius is an estimate. Equilibrium temperature is a model estimate, not a measured surface temperature or evidence of habitability.
NASA archive record and references ↗
Snapshot retrieved: 2026-10-11T04:15:07.688253+00:00