Skip to content
Public Universe

Exoplanet

HD 31527 b

125.4 light-years

Add to an observing list or journal →
Discovery
Radial Velocity · 2019
Radius
3.22 Earth radii
Mass
10.47 (+0.89 / −0.87) Earth masses
Orbital period
16.5535 (+3.4 × 10⁻³ / −3.5 × 10⁻³) days
Semi-major axis
0.1254 (+4.1 × 10⁻³ / −4.5 × 10⁻³) AU
Equilibrium temperature
832.2 (+15.5 / −15.5) 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