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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
SunriseRise: 6:46  
clear_day Transit: 12:11  
SunsetSet: 17:36
sunny DaytimeWhat's Visible Now?
All Constellations » Cassiopeia » 

12 Cassiopeiae

Altitude: 71.5°   Azimuth: 314.9°   Direction: North-West

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

12 Cassiopeiae visual magnitude is 5.4. Because of its reltive faintness, 12 Cassiopeiae should be visible only from locations with dark skies, while it is not visible at all from skies affected by light pollution.

The proper motion of 12 Cassiopeiae is 0.012 arcsec per year in Right Ascension and -0.001 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of 12 Cassiopeiae star
DSS2 image of 12 Cassiopeiae. The red arrow shows the motion of 12 Cassiopeiae during the next 10000 years (2.00 arcmin in Right Ascension and -0.17 arcmin in declination);

Key facts about 12 Cassiopeiae


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

Altitude: 71.5°
Azimuth: 314.9°
Direction: North-West

Celestial coordinates and finder chart of 12 Cassiopeiae

12 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 12 Cassiopeiae are provided in the following table:

00h 24m 47s
+61° 49’ 51”

The simplified sky map below shows the position of 12 Cassiopeiae in the sky:

Finder chart 12 Cassiopeiae star
Simplified finder chart for 12 Cassiopeiae.

Visibility of 12 Cassiopeiae from your location

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

12 Cassiopeiae is circumpolar and transits at 13:49 UTC (altitude: 79.6°)

Distance of 12 Cassiopeiae from the Sun and relative movement

12 Cassiopeiae is distant 763.47 light years from the Sun and it is moving towards the Sun at the speed of 4 kilometers per second.

234.19 pc
763.47 ly
-4 km/s
0.012 arcsec/year
-0.001 arcsec/year

Spectral properties of 12 Cassiopeiae

12 Cassiopeiae belongs to spectral class B9 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where 12 Cassiopeiae is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 12 Cassiopeiae. Attribution: Richard Powell / CC BY-SA

Alternative designations of 12 Cassiopeiae

12 Cassiopeiae