Exoplanet · Gliese 876
GJ 876 e
Orbit0.33 AU
Year124.3 days
Mass~15 M⊕
Temperature~150 K (estimated)
It circles Gliese 876 once every 124.3 days, 0.33 AU out.
Found in 2010 by the radial velocity method, which measures the star's wobble. That gives a minimum mass, so it could be heavier.
Sources
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