Cas

Cassiopeia

Cassiopeiae · Cas

598
Area (sq°)
#25
Size Rank
5
Main Stars
November
Best Month

Cassiopeia is one of the most recognizable constellations due to its distinctive W or M shape formed by five bright stars. It is circumpolar from most northern latitudes, visible year-round. The constellation lies in the Milky Way and contains several notable open clusters and nebulae.

Location in the Sky

Right Ascension01h 00m
Declination+60°
QuadrantNQ1
HemisphereNorthern
Area598 square degrees
Area Rank25 of 88

When to Observe

Cassiopeia is best observed during November. It is located in the NQ1 quadrant and is primarily visible from the northern hemisphere. The constellation contains 5 main stars forming its asterism, with 53 Bayer/Flamsteed designated stars in total. Its brightest star is Schedar.

Mythology & History

In Greek mythology, Cassiopeia was the vain queen of Ethiopia, wife of King Cepheus and mother of Andromeda. She boasted that she and her daughter were more beautiful than the sea nymphs, angering Poseidon. As punishment, she was placed in the sky seated on her throne, condemned to circle the pole upside-down for half the year.

Stars in Cassiopeia

16 cataloged stars