We use cookies to deliver essential features and to measure their performance. Learn more.
Home
Search Objects
Major Solar System Objects
Comets
Asteroids
Spacecrafts
Star Maps
Orbits
public  Greenwich, UK Greenwich, UK  ⓘ
TimezoneEurope/London
Sunrise: 6:33 
Transit: 12:55 
Sunset: 19:17
sleep   (Nighttime)  
What's Visible Now • Tonight Timeline
Search  close
All Constellations » Centaurus » 

τ Centauri (tau Centauri)

Below the horizon.  Never rises today
Alt: -64.13°   Az: 260.04°   Direction: West

τ Centauri is a main-sequence star of spectral class A2 in the constellation of Centaurus.

τ Centauri visual magnitude is 3.86. Because of its moderate brightness, τ Centauri 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 Centauri (tau Centauri) star
DSS2 image of τ Centauri. The red arrow shows the motion of τ Centauri during the next 1000 years (-3.07 arcmin in Right Ascension and -0.08 arcmin in declination);

Celestial Coordinates

Apparent

12h 39m 04s
-48° 40’ 36”
09h 17m 33s
21h 56m 38s

J2000

12h 37m 42s
-48° 32’ 27”

Galactic Coordinates

300.59°
14.27°

Finder Chart

Finder chart τ Centauri (tau Centauri) star
Simplified finder chart for τ Centauri (tau Centauri).

Magnitude, Color, Spectral Class

3.86
Main-sequence

0.83
A2V
9542K

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

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

Distance, Radial Speed, Proper Motion

τ Centauri is distant 131.61 light years from the Sun and it is moving far from the Sun at the speed of 5 kilometers per second.

40.37
131.61
5 km/s
-0.184 arcsec/y
-0.005"/y

Alternative Designations

τ Centauri
(tau Centauri)
SAO223560
SAO223560

Visibility from Your Location

τ Centauri (tau Centauri) is currently not visible from Greenwich, UK