Exoplanet
HD 278555 b
945.3 light-years
- Discovery
- Transit · 2026
- Radius
- 11.0296 (+0.4035 / −0.3923) Earth radii
- Mass
- 266.9759 (+31.7828 / −31.7828) Earth masses
- Orbital period
- 28.8424 (+4.5 × 10⁻⁵ / −4.6 × 10⁻⁵) days
- Semi-major axis
- 0.1985 (+3.9 × 10⁻³ / −4 × 10⁻³) AU
- Equilibrium temperature
- 853 (+16 / −16) 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