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public  Greenwich, UK Greenwich, UK  ⓘ
TimezoneEurope/London
Sunrise: 5:01 
Transit: 12:56 
Sunset: 20:52
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All Constellations » Cassiopeia » 

τ Cassiopeiae (tau Cassiopeiae)

Above the horizon.  Circumpolar today
Alt: 23.56°   Az: 341.88°   Direction: North-North-West

τ Cassiopeiae is a variable giant star of spectral class K1 in the constellation of Cassiopeia.

τ Cassiopeiae visual magnitude is 4.87. Because of its moderate brightness, τ Cassiopeiae is easily visible to the naked eye from locations with dark skies, while it might be barely visible, or not visible at all, from light-polluted skies.

Image of τ Cassiopeiae (tau Cassiopeiae) star
DSS2 image of τ Cassiopeiae. The red arrow shows the motion of τ Cassiopeiae during the next 10000 years (10.17 arcmin in Right Ascension and 9.50 arcmin in declination);

Celestial Coordinates

Apparent

23h 48m 18s
+58° 47’ 35”
09h 46m 27s
09h 34m 46s

J2000

23h 47m 03s
+58° 39’ 06”

Galactic Coordinates

114.63°
-3.18°

Finder Chart

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Finder chart for τ Cassiopeiae (tau Cassiopeiae).

Magnitude, Color, Spectral Class

4.87
Giant

1.25
K1III
4493K

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

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

Distance, Radial Speed, Proper Motion

τ Cassiopeiae is distant 172.67 light years from the Sun and it is moving towards the Sun at the speed of 21 kilometers per second.

52.97
172.67
-21 km/s
0.061 arcsec/y
0.057"/y

Alternative Designations

τ Cassiopeiae
(tau Cassiopeiae)
5 Cassiopeiae
SAO35763
SAO35763

Visibility from Your Location

τ Cassiopeiae (tau Cassiopeiae) is circumpolar and transits at 07:51 UTC (altitude: 82.7°)