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Public Universe

Exoplanet

GJ 9404 b

77.9 light-years

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Discovery
Radial Velocity · 2023
Radius
3.48 Earth radii
Mass
11.9 (+1.9 / −1.9) Earth masses
Orbital period
13.4586 (+4.4 × 10⁻³ / −6.7 × 10⁻³) days
Semi-major axis
0.0943 (+3.6 × 10⁻³ / −3.6 × 10⁻³) AU
Equilibrium temperature
473.5 K
Mass provenance
Msini

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