Andromeda II ("And 2") is a dwarf spheroidalsatellite in the neighborhood of the Andromeda Galaxy M31 and even closer situated to the Triangulum Galaxy M33; it is not quite clear if it is a satellite of the one or the other galaxy. It was discovered by Sidney van den Bergh in a survey of photographic plates taken with the Palomar 48-inch (1.2-meter) Schmidt telescope in 1970 and 1971, together with And I, And III, and the presumable non- or background galaxy And IV (van dan Bergh 1972). Dwarf spheroidal galaxy (dSph) is a term in astronomy applied to the nine low luminosity dwarf elliptical galaxies that are companions to the Milky Way and to the similar systems that are companions to the Andromeda Galaxy M31. ... Andromeda with satellites M110 (bright dot on left) & M32 (bright dot on right). ... This image is a Galaxy Evolution Explorer observation of the large galaxy in Andromeda, Messier 31. ... Messier Object 33, the Triangulum Galaxy. ...
Andromeda can be seen by Human eyes from Earth without a telescope as a "little cloud" (see Akira Fujii's photo to better relate the galaxy's location to the brightest stars of Constellation Andromeda).
Andromeda has a bright disk that is now believed to span as much as 228,000 ly in width (Chapman et al, 2005).
Andromeda'ssatellite (or "companion") galaxies include M32 and M110, two bright dwarf elliptical galaxies that are the brightest of a swarm of smaller companions.
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