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Public Universe

Exoplanet

alf Tau b

66.64 light-years

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The archive flags this planet’s confirmation as questioned in the literature.

Discovery
Radial Velocity · 2015
Radius
12.7 Earth radii
Mass
2,056.3601 (+168.4499 / −168.4499) Earth masses
Orbital period
628.96 (+0.9 / −0.9) days
Semi-major axis
1.46 (+0.27 / −0.27) AU
Equilibrium temperature
1,086.77 (+102.23 / −102.23) 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