A 61 cygni

61 Cygni is a planet in Isaac Asimov's Foundation series.


It is a star system advanced by Lord Dorwin as the potential site for a planet of origin for the human species.

Lord Dorwin cites 'Sol' (meaning Earth's Sun) and three other planetary systems in the Sirius Sector, along with Arcturus in the Arcturus Sector, as potential original worlds.[1] Claims were made as early as 1942 that 61 Cygni had a planetary system, though to date, none has been verified.[2]


  1. This fact seems to be contradicted by information given in Foundation and Earth.
  2. Asimov was aware of these claims.