Exoplanet
WASP-18 b
402.75 light-years
- Discovery
- Transit · 2009
- Radius
- 13.8991 (+0.8855 / −0.8855) Earth radii
- Mass
- 3,241.8498 (+111.2399 / −111.2399) Earth masses
- Orbital period
- 0.9415 (+2.4 × 10⁻⁷ / −2.4 × 10⁻⁷) days
- Semi-major axis
- 0.0202 (+2.9 × 10⁻⁴ / −3.1 × 10⁻⁴) AU
- Equilibrium temperature
- 2,429 (+77 / −70) 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