40 Eridani Ab

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40 Eridani, also known as Keid, is a triple star system consisting of a K-type main-sequence star, a white dwarf, and a red dwarf, about 16.34 light-years away in the constellation of Eridanus. It is most famously portrayed in science fiction as the home system of the Vulcans in Star Trek. In 2018, a mini-neptunian planet was thought to exist around 40 Eridani A. Follow-up studies in 2022 and 2024 ruled out this possibility, suggesting the RV signal detected was actually stellar activity from the host star instead.

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