Exoplanet
PSR B1257+12 b
1,956.94 light-years
- Discovery
- Pulsar Timing · 1994
- Radius
- 0.338 Earth radii
- Mass
- 0.02 (+2 × 10⁻³ / −2 × 10⁻³) Earth masses
- Orbital period
- 25.262 (+3 × 10⁻³ / −3 × 10⁻³) days
- Semi-major axis
- 0.19 AU
- Equilibrium temperature
- Unknown
- 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