Eta Andromedae

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Eta Andromedae (η And / η Andromedae) is a star system in the constellation Andromeda. It is approximately 243 light years from Earth.

The primary component, η Andromedae A, is a yellow G-type giant with an apparent magnitude of +4.40. It is a spectroscopic binary whose components have an orbital period of 115.7 days. It's companion η Andromedae B, is 133.4 arcseconds away and has an apparent magnitude of +11.5.

 

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