Exoplanet
TRAPPIST-1 g
40.54 light-years
- Discovery
- Transit · 2017
- Radius
- 1.129 (+0.015 / −0.013) Earth radii
- Mass
- 1.321 (+0.038 / −0.038) Earth masses
- Orbital period
- 12.3524 (+5.4 × 10⁻⁵ / −5.4 × 10⁻⁵) days
- Semi-major axis
- 0.0468 (+4 × 10⁻⁴ / −4 × 10⁻⁴) AU
- Equilibrium temperature
- 197.3 (+1.9 / −1.9) 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