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public  Greenwich, UK Greenwich, UK  ⓘ
TimezoneEurope/London
Sunrise: 6:39 
Transit: 12:54 
Sunset: 19:07
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All Constellations » Lupus » 

α Lupi (alpha Lupi)

Below the horizon.  Never rises today
Alt: -16.61°   Az: 149.37°   Direction: South-South-East

α Lupi is a variable and double giant star of spectral class B1 in the constellation of Lupus.

α Lupi visual magnitude is 2.3. Because of its brightness, α Lupi is clearly visible to the naked eye when observed from locations with dark skies, and should be also quite easily visible from light polluted areas.

Image of α Lupi (alpha Lupi) star
DSS2 image of α Lupi. The red arrow shows the motion of α Lupi during the next 10000 years (-3.50 arcmin in Right Ascension and -3.00 arcmin in declination);

Celestial Coordinates

Apparent

14h 43m 35s
-47° 29’ 33”
20h 54m 55s
11h 38m 30s

J2000

14h 41m 55s
-47° 23’ 17”

Galactic Coordinates

321.61°
11.44°

Finder Chart

Finder chart α Lupi (alpha Lupi) star
Simplified finder chart for α Lupi (alpha Lupi).

Magnitude, Color, Spectral Class

2.3
Giant

-3.83
B1III
13585K

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

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

Star System Properties

α Lupi 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 α Lupi double sysyem:

2.3
13.4
11.1
27.6 arcsec

Distance, Radial Speed, Proper Motion

α Lupi is distant 547.90 light years from the Sun and it is moving far from the Sun at the speed of 5 kilometers per second.

168.07
547.90
5 km/s
-0.021 arcsec/y
-0.018"/y

Alternative Designations

α Lupi
(alpha Lupi)
SAO225128
SAO225128

Visibility from Your Location

α Lupi (alpha Lupi) is currently not visible from Greenwich, UK