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public LocationGreenwich, UK
Sunrise: 5:01 
Transit: 13:04 
Sunset: 21:06
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All Constellations » Cassiopeia » 

23 Cassiopeiae

Above the horizon.  Circumpolar today
Alt: 65.97°   Az: 352.19°   Direction: North

23 Cassiopeiae is a giant star of spectral class B8 in the constellation of Cassiopeia.

23 Cassiopeiae visual magnitude is 5.41. Because of its faintness, 23 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.

23 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 23 Cassiopeiae star
DSS2 image of 23 Cassiopeiae. The red arrow shows the motion of 23 Cassiopeiae during the next 10000 years (2.50 arcmin in Right Ascension and -1.50 arcmin in declination);

Celestial Coordinates


00h 49m 27s
+74° 58’ 51”
00h 49m 18s
01h 38m 46s


00h 47m 46s
+74° 50’ 50”

Galactic Coordinates


Finder Chart

Finder chart 23 Cassiopeiae star
Simplified finder chart for 23 Cassiopeiae.

Magnitude, Color, Spectral Class



The red dot in the diagram below shows where 23 Cassiopeiae is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 23 Cassiopeiae. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

23 Cassiopeiae is distant 802.96 light years from the Sun and it is moving towards the Sun at the speed of 3 kilometers per second.

246.31 pc
802.96 ly
-3 km/s
0.015 arcsec/y
-0.009 "/y

Alternative Designations

23 Cassiopeiae

Visibility from Your Location

23 Cassiopeiae is circumpolar and transits at 05:11 UTC (altitude: 66.5°)