12.2
Apparent Mag370
Distance (ly)K5V
Spectral Type4,000
Temperature (K)SS Cygni is the prototype of dwarf nova outbursts, where matter from a companion star accumulates on a white dwarf and periodically erupts.
Stellar Data
Apparent Magnitude12.2
Absolute Magnitude5
Distance370 light-years
Spectral TypeK5V
Temperature4,000 K
Luminosity0.5 L☉
Radius1 R☉
Mass0.55 M☉
Right Ascension21h 42m 42.8s
Declination+43° 35′ 09.9″
ConstellationCygnus
Notable Facts
- SS Cygni is the prototype of the SS Cygni class of dwarf novae
- It erupts approximately every 50 days
- The outbursts occur when accumulated material on the white dwarf ignites