Exoplanet
WASP-21 b
842.87 light-years
- Discovery
- Transit · 2010
- Radius
- 11.99 (+0.56 / −0.56) Earth radii
- Mass
- 95.345 (+3.496 / −3.496) Earth masses
- Orbital period
- 4.3225 (+1.9 × 10⁻⁵ / −2.4 × 10⁻⁵) days
- Semi-major axis
- 0.052 (+4.1 × 10⁻⁴ / −4.4 × 10⁻⁴) AU
- Equilibrium temperature
- 1,333 (+28 / −28) 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