Star
Mirach
Red star · M0IIIvar
β Andromedae · Andromeda
Shown in its true colour — like most stars, it is too far away to photograph as more than a point of light.
Mirach is a prominent star in the northern constellation of Andromeda. It is pronounced and has the Bayer designation Beta Andromedae, which is Latinized from β Andromedae. This star is positioned northeast of the Great Square of Pegasus and is potentially visible to all observers north of latitude 54° S. It is commonly used by stargazers to find the Andromeda Galaxy. The galaxy NGC 404, also known as Mirach's Ghost, is seven arcminutes away from Mirach.
Description from Wikipedia (CC BY-SA 4.0).
In your sky
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Key facts
Distance
~197 light-years
Apparent mag.
+2.07
Spectral type
M0IIIvar
Luminosity
474 × Sun
Absolute mag.
−1.84
Catalogue
HIP 5447
Spectral type
M0IIIvar
True colour from its B–V index (1.58): a surface around 3700 K.
Did you know
- Mirach is also known as β Andromedae.
- Its spectral type M0IIIvar marks it as a red star.
- It lies in the constellation Andromeda.
