Facts about Almach
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Spectroscopic analysis reveals that Almach's primary star possesses a relatively cool surface temperature of approximately 5000 Kelvin despite its enormous size and exceptional luminosity.
- 09
Each component of Almach's triple system moves through space together at approximately 12 kilometers per second relative to our solar system.
- 08
At magnitude 2.26, Almach ranks among the brightest stars visible from Earth and shines with a combined luminosity from all three stellar components approximately 2,000 times greater than the Sun.
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Orbital calculations suggest Almach's hierarchical triple system will remain dynamically stable for at least several billion years despite the complex gravitational interactions between its three stellar components.
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Named Gamma Andromedae by Johann Bayer in 1603, Almach earned its designation as the third-brightest star in the constellation Andromeda.
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Gamma Andromedae's primary star shines approximately 2,000 times brighter than our Sun, making it visible to the naked eye despite its 350-light-year distance.
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Almach's orange giant primary star will eventually expand into a red giant and likely engulf its closer binary companion within several million years.
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In 1778, Johann Tobias Mayer first identified Almach as a triple star system through telescopic observation, making it one of the earliest recognized hierarchical stellar systems.
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Approximately 350 light-years away, Almach's secondary star is itself a close binary system comprising two stars orbiting each other every 61 days.
- 01
The binary star system Almach contains a primary giant star approximately 100 times larger than our Sun with a surface temperature around 5000 Kelvin.