Exoplanet · Gliese 54.1
YZ Cet d
Orbit0.029 AU
Year4.66 days
Mass≥ 1.09 M⊕
Temperature~357 K (estimated)
It circles Gliese 54.1 once every 4.66 days, 0.029 AU out: about 14 times closer than Mercury is to the Sun.
Found in 2017 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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