Cygnus (constellation)

Cygnus is a constellation in the northern sky. Cygnus means "swan" in Greek.^[1] There is a pattern of stars in Cygnus that is called the Northern Cross. This is because the pattern of stars looks like a cross. The constellation Crux (constellation) has a pattern of stars that is called the Southern Cross. The astronomer Ptolemy listed Cygnus in the 2nd century when he made a list of constellations.

Cygnus

Constellation
List of stars in Cygnus
Abbreviation	Cyg
Genitive	Cygni
Pronunciation	/ˈsɪɡnəs/, genitive /ˈsɪɡnaɪ/
Symbolism	swan, The Northern Cross
Right ascension	20.62 h
Declination	+42.03
Quadrant	NQ4
Area	804 sq. deg. (16th)
Main stars	9
Bayer/Flamsteed stars	84
Stars with planets	57
Stars brighter than 3.00m	4
Stars within 10.00 pc (32.62 ly)	1
Brightest star	Deneb (α Cyg) (1.25m)
Messier objects	2
Meteor showers	October Cygnids Kappa Cygnids
Bordering constellations	Cepheus Draco Lyra Vulpecula Pegasus Lacerta
Visible at latitudes between +90° and −40°. Best visible at 21:00 (9 p.m.) during the month of September.

Cygnus Constellation chart

Deep-sky objects

• North America nebula
• Pelican nebula

Famous stars

• Deneb
• Albireo
• Chi Cygni
• KY Cygni