7
Apparent Mag550
Distance (ly)S6-9e
Spectral Type2,700
Temperature (K)Chi Cygni is one of the most extreme Mira-type variable stars, varying by about 10 magnitudes (a factor of 10,000 in brightness) over 408 days.
Stellar Data
Apparent Magnitude7
Absolute Magnitude-2
Distance550 light-years
Spectral TypeS6-9e
Temperature2,700 K
Luminosity8,500 L☉
Radius480 R☉
Mass2 M☉
Right Ascension19h 50m 33.9s
Declination+32° 54′ 50.6″
ConstellationCygnus
Notable Facts
- Chi Cygni varies from magnitude 3.3 to 14.2
- This represents a brightness change by a factor of 10,000
- Its period is about 408 days