Star
Almach
Blue-white star · B8V
γ1 Andromedae · Andromeda
Shown in its true colour — like most stars, it is too far away to photograph as more than a point of light.
Gamma Andromedae is a multiple star system in the northern constellation of Andromeda. It is the third-brightest star in the constellation, after Alpheratz and Mirach. Its identifier is a Bayer designation that is Latinized from γ Andromedae, and is abbreviated Gam1 And or γ1 And, respectively. The system has the proper name Almach, pronounced. Based on parallax measurements, it is estimated to be about 390 light-years distant. The system is drifting closer to the Sun with a radial velocity of −11.7 km/s.
Description from Wikipedia (CC BY-SA 4.0).
In your sky
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Key facts
Distance
~393 light-years
Apparent mag.
+2.10
Spectral type
B8V
Luminosity
1,828 × Sun
Absolute mag.
−3.31
Catalogue
HIP 9640
Spectral type
B8V
True colour from its B–V index (1.37): a surface around 4000 K.
Did you know
- Almach is also known as γ1 Andromedae.
- Its spectral type B8V marks it as a blue-white star.
- It lies in the constellation Andromeda.
