Exoplanet
HD 154857 b
206.94 light-years
- Discovery
- Radial Velocity · 2004
- Radius
- 13.3 Earth radii
- Mass
- 778.6835 (+34.9613 / −34.9613) Earth masses
- Orbital period
- 408.6 (+0.5 / −0.5) days
- Semi-major axis
- 1.29 (+0.02 / −0.02) AU
- Equilibrium temperature
- 359.86 (+5.58 / −5.58) 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