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Mirach

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description Mirach Overview

Mirach (Beta Andromedae) is an M-type red giant in the constellation Andromeda, approximately 200 light-years away with an apparent magnitude near 2.05. It is a semi-regular variable star and is positioned in the sky close to several faint galaxies, including NGC 404 (known as Mirach's Ghost) and the Andromeda Galaxy (M31). Its brightness and location along Andromeda's main stellar pattern make it a useful naked-eye reference point for star-hopping to deep-sky objects.

help Mirach FAQ

How can Mirach help me find the Andromeda Galaxy?

Mirach, or Beta Andromedae, is commonly used as a bright stepping stone when star-hopping toward M31. From Mirach, observers follow the Andromeda star chain toward Mu Andromedae and then continue to the galaxy's position.

What is Mirach's Ghost?

Mirach's Ghost is the galaxy NGC 404, which appears very close to Mirach in the sky even though the two objects are physically unrelated. The star's glare makes NGC 404 an interesting observational challenge for small telescopes.

Why does Mirach look orange or red?

Mirach is a cool red giant whose surface temperature is lower than that of the Sun. That temperature shifts its visible color toward orange-red, especially through binoculars or a telescope.

Is Mirach actually inside the Andromeda Galaxy?

No, Mirach is a star within the Milky Way, while M31 is a separate galaxy about 2.5 million light-years away. Their apparent proximity is only a line-of-sight effect.

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