Epsilon Cygni

Starbox begin
name=Epsilon Cygni A/B Starbox image


caption = Epsilon Cygni A (53 Cygni) / B (52 Cygni) Starbox observe
epoch=J2000
ra=20^h 46^m 12.7^s
dec=+33° 58′ 12.9″
appmag_v=2.50/13.40
constell=Cygnus Starbox character
class=K0 III/M3
b-v=1.03/1.66
u-b=0.87
variable=? Starbox astrometry
radial_v=−11.5
prop_mo_ra=356.16
prop_mo_dec=330.28
parallax=45.26
p_error=0.53
absmag_v=1.08/11.99 Starbox visbin
name=Epsilon Cygni B (52 Cygni)
period=
axis=
eccentricity=
inclination=
node=
periastron= Starbox detail
mass=2–4
radius=12–16
luminosity=40–61 | temperature=4,675
metal= 70% Sun
rotation=
age=1.5 &times 10⁹ Starbox catalog
names=Gienah Cygni, Gl Gl 806.1 A/B, HR 7949, BD +33°4018, HD 197989, LHS 5358b/a, GCTP 4959.00, SAO 70474, FK5 780, HIP 102488. Starbox reference
Simbad=HD+197989

Epsilon Cygni (ε Cyg / ε Cygni) is a star in the constellation Cygnus. Its traditional name is Gienah; however, Gamma Corvi has an identical traditional name.

Epsilon Cygni is a cool orange giant star that is, as many visible stars tend to be, well along in terms of its stellar evolution. While young in comparison to the Sun its larger mass gives it a much shorter lifespan, and the star is in the beginning stages of its death. It's 72 light-years from the earth.

The name "Gienah" derives from the Arabic word for wing, جناح "janāħ".

ee also

* NGC 6960
* 52 Cygni Binary system

External links

* http://www.tcaep.co.uk/astro/constell/20460042.htm
* http://www.skyhound.com/sh/archive/aug1/NGC_6960.html
* http://www.pbase.com/mcrowle/image/81902791