Eta Aquilae
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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Eta Aquilae is a star in the constellation Aquila. It was also part of the former constellation Antinous. It is a Cepheid variable star, varying from apparent magnitude 3.5 to 4.4 with a period of 7.176641 days. Along with Delta Cephei, Zeta Geminorum and Beta Doradus, it is one of the most prominent naked eye Cepheids[citation needed]; that is, both the star itself and the variation in its brightness can be distinguished by the naked eye. Some other Cepheids such as…mehr

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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Eta Aquilae is a star in the constellation Aquila. It was also part of the former constellation Antinous. It is a Cepheid variable star, varying from apparent magnitude 3.5 to 4.4 with a period of 7.176641 days. Along with Delta Cephei, Zeta Geminorum and Beta Doradus, it is one of the most prominent naked eye Cepheids[citation needed]; that is, both the star itself and the variation in its brightness can be distinguished by the naked eye. Some other Cepheids such as Polaris are bright but have only a very small variation in brightness.