Andromeda (pronounced: An-drom-e-da, abbreviated: Y, Latin: Andromeda) is one of the 88 constellations into which the night sky is divided. The sky is not divided equally among the constellations. Andromeda occupies 722,278 square degrees of the night sky, which is 1.75% of the night sky. Andromeda is the 19th largest in terms of size in the night sky.
The name of the constellation means Ethiopian Princess. The constellation is one of the original constellations that was devised by the ancient Greek-Egyptian astronomer Ptolemy who lived between 90 A.D. and 168 A.D.
There are 8 stars that make up the main constellation. The Hipparcos satellite scanned and detailed 2112 stars. There are 80 stars that can be seen with the naked eye in the constellation in a very clear night sky.
Andromeda is not a member of the Zodiac group of twelve constellations that appear when the Sun sets.
Andromeda is a constellation in the northern celestial hemisphere. Andromeda lies north of the Ecliptic, which is different from the celestial equator. The celestial equator is the projection of the terrestrial equator into space. The Ecliptic is the path that the Earth takes around the Sun. The Earth has a title of 23.44°, so the two differ. The constellations of the Zodiac are based on the Ecliptic.
There are 24 extrasolar planets (exoplanets) in this constellation.
There are 3 deep space objects that were identified by Charles Messier in this constellation. There are 52 deep space objects that are not Messier.