Exoplanet
HD 128717 b
240.17 light-years
- Discovery
- Astrometry · 2025
- Radius
- 12.1 Earth radii
- Mass
- 6,293.0025 (+158.9142 / −158.9142) Earth masses
- Orbital period
- 3,420 (+20 / −20) days
- Semi-major axis
- 4.85 (+0.02 / −0.01) AU
- Equilibrium temperature
- 151.9 (+1.77 / −1.77) K
- Mass provenance
- Mass
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