Gamma Andromedae is the third brightest star in the constellation of Andromeda. It is also known by the traditional name Almach.
In 1778, Johann Tobias Mayer discovered that Andromedae was a double star. When examined in a small telescope, it appears to be a bright, golden yellow star next to a dimmer, indigo blue star, separated by approximately 10 arcseconds. It is considered by stargazers to be a beautiful double star with a striking contrast of color.
It was later discovered that Andromedae is itself a triple star system. What appears as a single star to the naked eye is thus a quadruple star system, approximately 350 light-years from the Earth.