Exoplanet
KELT-9 b
666.84 light-years
- Discovery
- Transit · 2017
- Radius
- 21.7006 (+0.5268 / −0.5268) Earth radii
- Mass
- 915.3458 (+111.2399 / −111.2399) Earth masses
- Orbital period
- 1.4811 (+1.1 × 10⁻⁶ / −1.1 × 10⁻⁶) days
- Semi-major axis
- 0.0337 (+7.8 × 10⁻⁴ / −7.8 × 10⁻⁴) AU
- Equilibrium temperature
- 3,921 (+182 / −174) 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