Back Lys van Andromeda se satelliet-sterrestelsels Afrikaans قائمة المجرات القمرية لمجرة المرأة المسلسلة Arabic Llista de les galàxies satèl·lit d'Andròmeda Catalan Liste der Satellitengalaxien von Andromeda German Sous-groupe d'Andromède French Galassie satellite di Andromeda Italian アンドロメダ銀河の伴銀河一覧 Japanese Galáxias satélites da Galáxia de Andrômeda Portuguese Список галактик-спутников галактики Андромеды Russian Andromeda'nın uydu galaksileri Turkish
The Andromeda Galaxy (M31) has satellite galaxies just like the Milky Way. Orbiting M31 are at least 13 dwarf galaxies: the brightest and largest is M110, which can be seen with a basic telescope. The second-brightest and closest one to M31 is M32. The other galaxies are fainter, and were mostly discovered starting from the 1970s.
On January 11, 2006, it was announced that Andromeda Galaxy's faint companion galaxies lie on or close to a single plane running through the Andromeda Galaxy's center. This unexpected distribution is not obviously understood in the context of current models for galaxy formation. The plane of satellite galaxies points toward a nearby group of galaxies (M81 Group), possibly tracing the large-scale distribution of dark matter.
It is unknown whether the Triangulum Galaxy is a satellite of Andromeda.
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