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public LocationGreenwich, UK
TimezoneEurope/London
Sunrise: 5:11 
Transit: 13:06 
Sunset: 21:00
sunny   (Daytime)   What's Visible Now?
All Constellations » Lupus » 

τ1 Lupi (tau1 Lupi)

Below the horizon.  Never rises today
Alt: -82.06°   Az: 42.26°   Direction: North-East

τ1 Lupi is a variable and double sub-giant star of spectral class B2 in the constellation of Lupus.

τ1 Lupi visual magnitude is 4.56. Because of its moderate brightness, τ1 Lupi 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 τ1 Lupi (tau1 Lupi) star
DSS2 image of τ1 Lupi. The red arrow shows the motion of τ1 Lupi during the next 10000 years (-2.00 arcmin in Right Ascension and -2.17 arcmin in declination);

Celestial Coordinates

Apparent

14h 27m 43s
-45° 19’ 51”
12h 30m 23s
02h 58m 06s

J2000

14h 26m 08s
-45° 13’ 17”

Galactic Coordinates

319.92°
14.5°

Finder Chart

Finder chart τ1 Lupi (tau1 Lupi) star
Simplified finder chart for τ1 Lupi (tau1 Lupi).

Magnitude, Color, Spectral Class

4.56
Sub-giant

-2.95
B2IV
12489K

The red dot in the diagram below shows where τ1 Lupi is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of τ1 Lupi. Attribution: Richard Powell / CC BY-SA

Star System Properties

τ1 Lupi is a visual double star which can be observed with the help of small or medium telescopes. The table below shows key information about the τ1 Lupi double sysyem:

4.56
9.26
4.7
158.2 arcsec

Distance, Radial Speed, Proper Motion

τ1 Lupi is distant 1,034.92 light years from the Sun and it is moving towards the Sun at the speed of 22 kilometers per second.

317.46
1,034.92
-22 km/s
-0.012 arcsec/y
-0.013"/y

Alternative Designations

τ1 Lupi
(tau1 Lupi)
SAO224919
SAO224919

Visibility from Your Location

τ1 Lupi (tau1 Lupi) is currently not visible from Greenwich, UK