40 Eridani C

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Spectral type: M4.5e
Absolute magnitude: 12.66
Surface temperature: 3000 K
Diameter: 374,100 mi.

A red dwarf flare star in the 40 Eridani system, also known as Omicron 2 Eridani C.

Orbit

40 Eridani B and C orbit each other every 248 years, at an average distance from each other of 44 AU. In turn, 40 Eridani B and C together orbit 40 Eridani A, situated 400 AU away, completing an orbit every 8000 or so years.