Exoplanet
TOI-521 b
198.77 light-years
- Discovery
- Transit · 2025
- Radius
- 1.98 (+0.14 / −0.14) Earth radii
- Mass
- 5.3 (+1 / −1) Earth masses
- Orbital period
- 1.5429 (+1 × 10⁻⁶ / −8 × 10⁻⁷) days
- Semi-major axis
- 0.0195 (+3 × 10⁻⁴ / −3 × 10⁻⁴) AU
- Equilibrium temperature
- 794 (+35 / −35) 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