Exoplanet
HD 39855 b
75.86 light-years
- Discovery
- Radial Velocity · 2019
- Radius
- 2.85 Earth radii
- Mass
- 8.5 (+1.5 / −1.5) Earth masses
- Orbital period
- 3.2498 (+4 × 10⁻⁴ / −4 × 10⁻⁴) days
- Semi-major axis
- 0.041 (+1 × 10⁻³ / −1 × 10⁻³) AU
- Equilibrium temperature
- 1,145.89 (+19.69 / −19.69) 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