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- Bayer: β Persei
- Flamsteed: 26 Persei
- Gorgona; Gorgonea Prima; Demon Star; El Ghoul; Dämonenstern; Teufelsstern
- Bright Star Catalog: HR 936
- Henry Draper Catalog: HD 19356
- SAO Catalog: SAO 38592
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The position of Beta Persei (Algol; Gorgona; Gorgonea Prima; Demon Star; El Ghoul)
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Algol AB movie imaged with the CHARA interferometer
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Algol and its dark companion as seen from Earth.
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Algol and its dark companion as seen from above orbit.