Exoplanet
HD 17156 b
254.68 light-years
- Discovery
- Radial Velocity · 2007
- Radius
- 12.2626 (+0.3475 / −0.3363) Earth radii
- Mass
- 1,036.1206 (+34.9611 / −34.9611) Earth masses
- Orbital period
- 21.2164 (+6.1 × 10⁻⁶ / −6.1 × 10⁻⁶) days
- Semi-major axis
- 0.1632 (+2.7 × 10⁻³ / −2.7 × 10⁻³) AU
- Equilibrium temperature
- 888 (+12 / −11) 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