Star lore
Mirach
Direct answer
Mirach is Beta Andromedae, a red giant forming the middle of Andromeda's principal stellar chain.
Mirach is Andromeda's warm-colored middle star and a guide toward M31.
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At a glance
- Found in
- Constellations & Star Lore
- Related
- Mintaka, Mirfak, Almach, Hamal
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The story behind Mirach
Mirach’s Arabic-derived name refers to the girdle or hip of the traditional Andromeda figure.
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Why Mirach matters
Mirach’s prominent location supports star-hopping to both the Andromeda Galaxy and the small galaxy known as Mirach's Ghost.
How to read Mirach
Move from Alpheratz through Mirach, then step north through Mu Andromedae toward the glow of M31.
Mirach in practice: an example
NGC 404 appears close to Mirach in the eyepiece even though the galaxy lies millions of light-years beyond it.
Where readings of Mirach go wrong
Mirach's Ghost is a perspective neighbor, not a companion orbiting the star.
Sources and editorial method
Research references used for this entry include:
- IAU Division C Working Group on Star Names - Official IAU working group responsible for standardizing star names used in international astronomy.
- CDS SIMBAD Astronomical Database - Professional astronomical database for stellar identifiers, positions, classifications, and bibliography.
- Source
- The Great Almanac Dictionary
- Category
- Constellations & Star Lore
- Last updated
- 2026-09-26
Step from Mirach toward Andromeda
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Common questions
What is Mirach?
Mirach is Beta Andromedae, a red giant forming the middle of Andromeda's principal stellar chain.
What do people get wrong about Mirach?
Mirach's Ghost is a perspective neighbor, not a companion orbiting the star.
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