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A Complete Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 7:54  
clear_day Transit: 11:51  
SunsetSet: 15:49 south
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All Constellations » Cassiopeia » 

23 Cassiopeiae

Altitude: 44.7°   Azimuth: 20.4°   Direction: North-North-East

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

23 Cassiopeiae visual magnitude is 5.41. Because of its reltive faintness, 23 Cassiopeiae should be visible only from locations with dark skyes, while it is not visible at all from skyes affected by light pollution.

The table below summarizes the key facts about 23 Cassiopeiae:


23 Cassiopeiae is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 44.7°
Azimuth: 20.4°
Direction: North-North-East

Celestial coordinates and finder chart of 23 Cassiopeiae

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. Celestial coordinates for the J2000 equinox as well as galactic coordinates of 23 Cassiopeiae are provided in the following table:

00h 47m 46s
+74° 50’ 50”

The simplified sky map below shows the position of 23 Cassiopeiae in the sky:

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

Visibility of 23 Cassiopeiae from your location

Location: Greenwich, United Kingdom edit_location_alt
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

23 Cassiopeiae is circumpolar and transits at 19:26 UTC (altitude: 66.6°)

Digitized Sky Survey image of 23 Cassiopeiae

The image below is a photograph of 23 Cassiopeiae from the Digitized Sky Survey 2 (DSS2 - see the credits section) taken in the red channel. The area of sky represented in the image is 0.5x0.5 degrees (30x30 arcmins). The proper motion of 23 Cassiopeiae is 0.015 arcsec per year in Right Ascension and -0.009 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

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);

Distance of 23 Cassiopeiae from the Sun and relative movement

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/year
-0.009 arcsec/year

Spectral properties of 23 Cassiopeiae

23 Cassiopeiae belongs to spectral class B8 and has a luminosity class of III corresponding to a giant star.


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

Alternative designations of 23 Cassiopeiae

23 Cassiopeiae