Exoplanet
51 Peg b
50.43 light-years
- Discovery
- Radial Velocity · 1995
- Radius
- 14.1 Earth radii
- Mass
- 193.8753 (+19.0697 / −15.8914) Earth masses
- Orbital period
- 4.2308 (+2.7 × 10⁻⁶ / −2.7 × 10⁻⁶) days
- Semi-major axis
- 0.052 AU
- Equilibrium temperature
- 1,328.93 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