TOI-521

Autore/i: QAHXR

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TOI-521, also known as TIC 27649847, is a single M3V-type red dwarf star about 199 light-years away in the constellation Cancer. A transiting sub-Neptune with a mass of approximately 5.3 times that of Earth and a radius of about 1.98 times that of Earth was discovered orbiting this star via the transit method, with an orbital period of 1.54 days. A non-transiting candidate with a minimum mass of about 10.7 times that of Earth and an orbital period of 20.35 days has also been proposed.

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