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public LocationGreenwich, UK
Sunrise: 4:59 
Transit: 13:04 
Sunset: 21:08
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All Constellations » Cassiopeia » 

55 Cassiopeiae

Above the horizon.  Circumpolar today
Alt: 36.44°   Az: 334.79°   Direction: North-North-West

55 Cassiopeiae is a variable hypergiant star of spectral class G0 in the constellation of Cassiopeia.

55 Cassiopeiae visual magnitude is 6.07. Because of its faintness, 55 Cassiopeiae is visible to the naked eye only from locations with very dark skies, while it is not visible at all from skies affected by light pollution.

55 Cassiopeiae is situated close to the northern celestial pole and, as such, it is visible for most part of the year from the northern hemisphere.

Image of 55 Cassiopeiae star
DSS2 image of 55 Cassiopeiae. The red arrow shows the motion of 55 Cassiopeiae during the next 100000 years (-10.00 arcmin in Right Ascension and -10.00 arcmin in declination);

Celestial Coordinates


02h 16m 26s
+66° 38’ 16”
08h 00m 49s


02h 14m 29s
+66° 31’ 27”

Galactic Coordinates


Finder Chart

Finder chart 55 Cassiopeiae star
Simplified finder chart for 55 Cassiopeiae.

Magnitude, Color, Spectral Class



The red dot in the diagram below shows where 55 Cassiopeiae is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 55 Cassiopeiae. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

55 Cassiopeiae is distant 737.56 light years from the Sun and it is moving towards the Sun at the speed of 12 kilometers per second.

226.24 pc
737.56 ly
-12 km/s
-0.006 arcsec/y
-0.006 "/y

Alternative Designations

55 Cassiopeiae

Visibility from Your Location

55 Cassiopeiae is circumpolar and transits at 06:45 UTC (altitude: 74.8°)