|Meaning in English||the princess Andromeda|
|Right ascension||1 h|
|Visible to latitude||Between 90° and -40°|
722 sq. deg.
|Number of stars with|
apparent magnitude < 3
- Apparent magnitude
|Alpheratz (α And)|
Andromeda is a constellation representing the princess Andromeda, in the northern sky near Pegasus. The constellation takes the general shape of a long, dim, straggly letter "A". It is most notable for containing the Andromeda Galaxy.
|Table of contents|
2 Notable deep sky objects
The brightest star in Andromeda, α Andromedae, called Alpheratz or Sirrah, makes up with α, β, and λ Pegasi an asterism called the Great Square of Pegasus. This star was once considered part of Pegasus, as confirmed by its name, "shoulder of the horse."
β Andromedae is called Mirach, the girdle. It is 88 light years distant and of magnitude 2,1.
γ Andromedae, or Almach, is found at the tip of the southern leg of the big "A". It is a beautiful multiple star with contrasting colours.
Notable deep sky objects
The most famous deep sky object in Andromeda is M31, the Andromeda Galaxy, the most distant object visible to the naked eye. It is an enormous spiral galaxy much like ours. To find the galaxy, draw a line between β and μ Andromedae, and extend the line approximately the same distance again from μ.
Andromeda was a princess condemned to be sacrificed to a sea monster; she was rescued by the hero Perseus. See Andromeda for the full account of the myth. Such figures from the myth as her mother and father, Cassiopeia and Cepheus, Perseus and his winged horse Pegasus, and the sea monster Cetus are all commemorated by nearby constellations.