Exoplanet
HD 180617 b
19.28 light-years
- Discovery
- Radial Velocity · 2018
- Radius
- 3.53 Earth radii
- Mass
- 12.214 (+1.05 / −1.05) Earth masses
- Orbital period
- 105.911 (+0.109 / −0.109) days
- Semi-major axis
- 0.343 (+4 × 10⁻³ / −4 × 10⁻³) AU
- Equilibrium temperature
- 201.8 (+4.3 / −4.3) 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