Exoplanet
HD 101581 b
41.68 light-years
- Discovery
- Transit · 2025
- Radius
- 0.956 (+0.061 / −0.063) Earth radii
- Mass
- 0.827 Earth masses
- Orbital period
- 4.4657 (+2.9 × 10⁻⁴ / −3.2 × 10⁻⁴) days
- Semi-major axis
- 0.046 (+7 × 10⁻⁴ / −7 × 10⁻⁴) AU
- Equilibrium temperature
- 834 (+23 / −23) K
- Mass provenance
- M-R relationship
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