40 Eridani A/B/C
40 Eridani A - Spectral Class K1, Mass 0.76, Luminosity 0.38
15.9 lightyears from Terra
Primary of Promethia.
40 Eridani B/C are a binary pair at an average separation of about 420 AU and a period of over 8,000 years. B is an A4 white dwarf with mass 0.43 and luminosity 0.0034; C is an M4 red dwarf with mass 0.16 and luminosity 0.0007. B and C orbit each other in a highly elliptical orbit that lasts about 252 years and swings between 21 and 49 AUs.