KY Cygni photograph

KY Cygni

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Radius1. 0461 billion km
Surface temperature3,500 K
Mass4. 972 × 10^31 kg (25 M☉)
U−B color index+2. 91
Surface gravity (log g) cgs
B−V color index+3. 39
Date of Reg.
Date of Upd.
ID2198860
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About KY Cygni


KY Cygni is a red supergiant of spectral class M3. 5Ia located in the constellation Cygnus. It is one of the largest and most luminous stars, with a luminosity about 300,000 or more times that of the Sun and a radius of over 1,000 times that of the Sun.

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