Exoplanet
WASP-121 b
880.29 light-years
- Discovery
- Transit · 2016
- Radius
- 19.526 (+0.0673 / −0.0673) Earth radii
- Mass
- 371.8592 (+13.6666 / −13.6666) Earth masses
- Orbital period
- 1.2749 (+1.5 × 10⁻⁷ / −1.5 × 10⁻⁷) days
- Semi-major axis
- 0.0257 (+1 × 10⁻⁴ / −1 × 10⁻⁴) AU
- Equilibrium temperature
- 2,409 (+24 / −24) 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