Exoplanet
TOI-1221 b
451.44 light-years
- Discovery
- Transit · 2023
- Radius
- 2.91 (+0.13 / −0.12) Earth radii
- Mass
- < 1,112.3994 Earth masses
- Orbital period
- 91.6828 (+3.2 × 10⁻⁴ / −4.1 × 10⁻⁴) days
- Semi-major axis
- 0.387 (+0.026 / −0.023) AU
- Equilibrium temperature
- 440 (+60 / −60) 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