KY Cygni

Starbox begin
name=KY Cygni Starbox image


caption = KY Cygni Starbox observe
epoch=J2000
ra=20^h 25^m 57.2^s
dec=38° 21′ 11″
appmag_v= ? (B mag is 13.3)
constell=Cygnus Starbox character
class=M3m
variable= Pulsating variable Starbox astrometry
radial_v=
prop_mo_ra=
prop_mo_dec=
gal_lat= +00.1835
gal_lon=077.0045
parallax=
p_error=
absmag_v=
- style="vertical-align: top;"
Distance
5.200 Ly Starbox detail
mass=25
radius=1420
luminosity=300.000
temperature=?
metal=?
gravity=?
rotation=?
age=? Starbox catalog
names= SAO 73745, BD+28°4705, GSC 01735-01165. Starbox reference
Simbad=RAFGL+2475

KY Cygni is a red supergiant star (spectral class M3m) located in the constellation Cygnus. It is one of the largest stars known, at about 1,420 times the Sun's diameter, and is also one of the most luminous, with about 300,000 times the Sun's luminosity. It is approximately 5,200 light-years away.

References

* http://jumk.de/astronomie/big-stars/vv-cephei.shtml
* http://www.astronomy.com/asy/default.aspx?c=a&id=2772