τ Cassiopeiae (tau Cassiopeiae)
τ Cassiopeiae is a variable giant star in the constellation of Cassiopeia.
τ Cassiopeiae visual magnitude is 4.87. Because of its moderate brightness, τ Cassiopeiae should be easily visible from locations with dark skies, while it can be barely visible, or not visible at all, from skies affected by light pollution.
The proper motion of τ Cassiopeiae is 0.061 arcsec per year in Right Ascension and 0.057 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.
Key facts about τ Cassiopeiae
τ Cassiopeiae (tau Cassiopeiae) is above the horizon from Greenwich, United Kingdom .
Altitude: 36.9°
Azimuth: 320.4°
Direction: North-West
Celestial coordinates and finder chart of τ Cassiopeiae
τ Cassiopeiae is situated north of the celestial equator, as such, it is more easily visible from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of τ Cassiopeiae are provided in the following table:
The simplified sky map below shows the position of τ Cassiopeiae in the sky:
Visibility of τ Cassiopeiae from your location
Location: Greenwich, United Kingdom
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London
τ Cassiopeiae (tau Cassiopeiae) is circumpolar and transits at 09:35 UTC (altitude: 82.8°)
Distance of τ Cassiopeiae from the Sun and relative movement
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.
Spectral properties of τ Cassiopeiae
τ Cassiopeiae belongs to spectral class K1 and has a luminosity class of III corresponding to a giant star.
The red dot in the diagram below shows where τ Cassiopeiae is situated in the Hertzsprung–Russell diagram.
