Chi Cygni is a red giant star.
Chi Cygni is a Mira variable star located in the Cygnus constellation. It is 737 times larger than the Sun. Chi Cygni is a red giant star that is about to end its life.
Images for kids
Illustration of Cygnus from Urania's Mirror, with χ marked as variable
χ Cygni light curve from 2006 to 2010. Note that dates are in the MM/DD/YY format
Changes in the visual magnitude, temperature, radius, and bolometric luminosity as χ Cygni pulsates