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A Complete Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
SunriseRise: 6:40  
clear_day Transit: 12:10  
SunsetSet: 17:41
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All Constellations » Lupus » 

λ Lupi (lambda Lupi)

Altitude: -40.4°   Azimuth: 244.6°   Direction: West-South-West

λ Lupi is a double main-sequence star in the constellation of Lupus.

λ Lupi visual magnitude is 4.05. Because of its moderate brightness, λ Lupi 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 λ Lupi is -0.016 arcsec per year in Right Ascension and -0.019 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of λ Lupi (lambda Lupi) star
DSS2 image of λ Lupi. The red arrow shows the motion of λ Lupi during the next 10000 years (-2.67 arcmin in Right Ascension and -3.17 arcmin in declination);

Key facts about λ Lupi


λ Lupi (lambda Lupi) is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -40.4°
Azimuth: 244.6°
Direction: West-South-West

Celestial coordinates and finder chart of λ Lupi

λ Lupi is situated south of the celestial equator, as such, it is more easily visible from the southern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of λ Lupi are provided in the following table:

15h 08m 50s
-45° 16’ 46”

The simplified sky map below shows the position of λ Lupi in the sky:

Finder chart λ Lupi (lambda Lupi) star
Simplified finder chart for λ Lupi (lambda Lupi).

Visibility of λ Lupi from your location

Location: Greenwich, United Kingdom edit_location_alt
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

λ Lupi (lambda Lupi) is currently not visible from Greenwich, United Kingdom edit_location_alt

Distance of λ Lupi from the Sun and relative movement

λ Lupi is distant 406.48 light years from the Sun and it is moving far from the Sun at the speed of 10 kilometers per second.

124.69 pc
406.48 ly
10 km/s
-0.016 arcsec/year
-0.019 arcsec/year

Spectral properties of λ Lupi

λ Lupi belongs to spectral class B3 and has a luminosity class of V corresponding to a main-sequence star.


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

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

λ Lupi star system properties

λ 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 λ Lupi double sysyem:

0.4 arcsec

Alternative designations of λ Lupi

λ Lupi
(lambda Lupi)