EPSILON ERIDANI SYSTEM / PLANETARY DOSSIER
Epsilon Eridani b
A Jupiter-mass companion whose stellar tug reveals more than its imagined clouds.

Gas giant
A long year above an unseen cloud sea.
Environment ↗
02ATMOSPHERE
A giant’s envelope, still unresolved.
- DIAMETER
- Not measured
- POSSIBILITY FOR LIFE
- Unknown · no established habitat
- WITHOUT PROTECTION
- Not survivable without protection
Orbit ↗
037.33 Earth years
Sources ↗One year around Epsilon Eridani
3.53 AU · semimajor axisSchematic · not to scaleMass comparison ↗
04DYNAMICAL MASS1 × JupiterOrbit inclination constrained by astrometry and radial velocities.
± 0.1 Jupiter masses
Jupiter1 × Jupiter
Epsilon Eridani b1 × Jupiter



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