Exoplanet
HD 191939 b
174.85 light-years
- Discovery
- Transit · 2020
- Radius
- 3.41 (+0.075 / −0.075) Earth radii
- Mass
- 10 (+0.7 / −0.7) Earth masses
- Orbital period
- 8.8803 (+4.7 × 10⁻⁶ / −4.7 × 10⁻⁶) days
- Semi-major axis
- 0.0804 (+2.5 × 10⁻³ / −2.3 × 10⁻³) AU
- Equilibrium temperature
- 880 (+20 / −20) 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