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public  Greenwich, UK Greenwich, UK  ⓘ
TimezoneEurope/London
Sunrise: 5:01 
Transit: 12:56 
Sunset: 20:52
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All Constellations » Cassiopeia » 

γ Cassiopeiae (gamma Cassiopeiae)

Above the horizon.  Circumpolar today
Alt: 56.85°   Az: 50.13°   Direction: North-East

γ Cassiopeiae is a variable and multiple hypergiant star of spectral class B0 in the constellation of Cassiopeia.

γ Cassiopeiae visual magnitude is 2.47. Because of its brightness, γ Cassiopeiae is clearly visible to the naked eye when observed from locations with dark skies, and should be also quite easily visible from light polluted areas.

Image of γ Cassiopeiae (gamma Cassiopeiae) star
DSS2 image of γ Cassiopeiae. The red arrow shows the motion of γ Cassiopeiae during the next 10000 years (4.33 arcmin in Right Ascension and -0.83 arcmin in declination);

Celestial Coordinates

Apparent

00h 58m 15s
+60° 51’ 12”
20h 01m 59s
21h 00m 15s

J2000

00h 56m 42s
+60° 43’ 00”

Galactic Coordinates

123.58°
-2.15°

Finder Chart

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Finder chart for γ Cassiopeiae (gamma Cassiopeiae).

Magnitude, Color, Spectral Class

2.47
Hypergiant

-3.90
B0IV
12489K

The red dot in the diagram below shows where γ Cassiopeiae is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of γ Cassiopeiae. Attribution: Richard Powell / CC BY-SA

Star System Properties

γ Cassiopeiae is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the γ Cassiopeiae double sysyem:

2.47
8.77
6.3
2.3 arcsec

Distance, Radial Speed, Proper Motion

γ Cassiopeiae is distant 612.78 light years from the Sun and it is moving towards the Sun at the speed of 7 kilometers per second.

187.97
612.78
-7 km/s
0.026 arcsec/y
-0.005"/y

Alternative Designations

γ Cassiopeiae
(gamma Cassiopeiae)
27 Cassiopeiae
SAO11482
SAO11482

Visibility from Your Location

γ Cassiopeiae (gamma Cassiopeiae) is circumpolar and transits at 09:01 UTC (altitude: 80.6°)