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All Constellations » Cassiopeia » 

40 Cassiopeiae

Above the horizon.  Circumpolar today
Alt: 36.02°   Az: 350.67°   Direction: North

40 Cassiopeiae is a variable and double giant star of spectral class G8 in the constellation of Cassiopeia.

40 Cassiopeiae visual magnitude is 5.28. Because of its faintness, 40 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.

Image of 40 Cassiopeiae star
DSS2 image of 40 Cassiopeiae. The red arrow shows the motion of 40 Cassiopeiae during the next 10000 years (-2.17 arcmin in Right Ascension and -2.50 arcmin in declination);

Celestial Coordinates

Apparent

01h 40m 34s
+73° 10’ 00”
10h 12m 18s
11h 52m 52s

J2000

01h 38m 30s
+73° 02’ 24”

Galactic Coordinates

126.4°
10.49°

Finder Chart

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Finder chart for 40 Cassiopeiae.

Magnitude, Color, Spectral Class

5.28
Giant

-0.40
G8III
4841K

The red dot in the diagram below shows where 40 Cassiopeiae is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 40 Cassiopeiae. Attribution: Richard Powell / CC BY-SA

Star System Properties

40 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 40 Cassiopeiae double sysyem:

5.28
11.68
6.4
53.3 arcsec

Distance, Radial Speed, Proper Motion

40 Cassiopeiae is distant 446.58 light years from the Sun and it is moving towards the Sun at the speed of 5 kilometers per second.

136.99
446.58
-5 km/s
-0.013 arcsec/y
-0.015"/y

Alternative Designations

40 Cassiopeiae
SAO4453
SAO4453

Visibility from Your Location

40 Cassiopeiae is circumpolar and transits at 16:12 UTC (altitude: 68.3°)