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Gienah

ε Cyg. Magnitude 2.46, orange-red. Comfortably visible to the naked eye from a suburban sky.

The numbers

Designationε Cyg
Magnitude2.46
Colourorange-red
Right ascension20.770h
Declination+33.97°
B−V index1.03
CatalogueHR 7949

What you are looking at

Astronomers call it ε Cyg — the Bayer designation, which reads as a Greek letter ranking its brightness within its constellation. Gienah is the name people actually use.

Gienah shines at magnitude 2.46, making it comfortably visible to the naked eye from a suburban sky. Its B−V colour index of 1.03 makes it orange-red to the eye, corresponding to a surface temperature of under 4,000 K.

It sits at right ascension 20.77 hours and declination +34.0°. It sits well north on the sky and is comfortably placed for northern hemisphere observers.

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