Cygnus

Cygnus is a prominent northern constellation whose brightest stars form the Northern Cross asterism. Deneb, its brightest star, is one of the most luminous stars known and forms one corner of the Summer Triangle. The constellation lies along the Milky Way, containing rich star fields and the Cygnus X-1 black hole.

Location in the Sky

When to Observe

Cygnus is best observed during September. It is located in the NQ4 quadrant and is primarily visible from the northern hemisphere. The constellation contains 9 main stars forming its asterism, with 84 Bayer/Flamsteed designated stars in total. Its brightest star is Deneb.

Mythology & History

In Greek mythology, Cygnus represents several figures transformed into swans. The most common identification is with Zeus, who disguised himself as a swan to seduce Leda, queen of Sparta. Another version identifies Cygnus as Orpheus, transformed into a swan and placed next to his lyre (Lyra) in the sky.