Exoplanet
G 9-40 b
91.09 light-years
- Discovery
- Transit · 2019
- Radius
- 1.9 (+0.065 / −0.065) Earth radii
- Mass
- 4 (+0.63 / −0.63) Earth masses
- Orbital period
- 5.746 (+2 × 10⁻⁶ / −2 × 10⁻⁶) days
- Semi-major axis
- 0.0418 (+6.4 × 10⁻⁴ / −6.4 × 10⁻⁴) AU
- Equilibrium temperature
- 440.6 (+7.6 / −7.6) 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