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Zodiac: Sagittarius
Nov 23 - Dec 21
Read more about Sagittarius.
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γ Cassiopeiae

γ Cassiopeiae is a luminous blue sub giant star (B0IV:evar) in the constellation of Cassiopeia.
γ Cassiopeiae is one of the brightest stars in the night sky, and the center star of the W-shape of Cassiopeia. It is also a binary star system and an eruptive variable star, whose brightness varies from 1.6 to 3.0 mag. Its brightness variation is caused by material being lost from the star.
Easy to find due to its brightness and its position within the W-shape of Cassiopeia, it has traditionally be used to fine geographic North, as the W of Cassiopeia roughly points to the Polar Star Polaris (α Ursae Minoris).
γ Cassiopeiae is located next to the beautiful reflection nebulae IC 59 and IC 63, which can be seen as red clouds on long-exposed astro photos. Being only 3 to 4 lightyears away from γ Cassiopeiae, they are cosmic neighbors.
Right ascension
0h 56m 42.5s (14.17709°)
The magnitude (brightness) is measured on a logarithmic scale. Small numbers mean bright stars: A star with a brightness of 1 mag is 100 times brighter that an star with 6 mag.
2.47 mag
The distance is measured in light years (LY). A light year is the distance, that light travels within one year. 1 LJ is equal to about 5,878,630,000,000 miles.
549549 ly
Spectral type
Color index
Every star belongs to a constellation, and 12 of those constellations are part of the zodiac.
Cassiopeia (Cassiopeia)
γ Cassiopeiae is the brightest bluish star in this photograph. It is right above the beautiful reflection nebulae IC 59 and IC63.
Image credit: mdmediendesign /
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This star is reserved and cannot be named.
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