Your Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 4:48  
clear_day Transit: 12:56  
SunsetSet: 21:05 south
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All Constellations » Lupus » 

ζ Lupi (zeta Lupi)

ζ Lupi is a double giant star in the constellation of Lupus.

ζ Lupi visual magnitude is 3.41. Because of its moderate brightness, ζ Lupi should be easily visible from locations with dark skyes, while it can be barely visible, or not visible at all, from skyes affected by light pollution.

The table below summarizes the key facts about ζ Lupi:

ζ Lupi (zeta Lupi) is below the horizon from Greenwich, United Kingdom edit_location_alt.

Celestial coordinates and finder chart of ζ Lupi

ζ 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 ζ Lupi are provided in the following table:

15h 12m 17s
-52° 05’ 57”

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

Finder chart ζ Lupi (zeta Lupi) star
Simplified finder chart for ζ Lupi (zeta Lupi).

Visibility of ζ Lupi from your location

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

ζ Lupi (zeta Lupi) is currently not visible from Greenwich, United Kingdom edit_location_alt

Digitized Sky Survey image of ζ Lupi

The image below is a photograph of ζ Lupi from the Digitized Sky Survey 2 (DSS2 - see the credits section) taken in the red channel. The area of sky represented in the image is 0.5x0.5 degrees (30x30 arcmins). The proper motion of ζ Lupi is -0.112 arcsec per year in Right Ascension and -0.073 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of ζ Lupi (zeta Lupi) star
DSS2 image of ζ Lupi. The red arrow shows the motion of ζ Lupi during the next 1000 years (-1.87 arcmin in Right Ascension and -1.22 arcmin in declination);

Distance of ζ Lupi from the Sun and relative movement

ζ Lupi is distant 116.18 light years from the Sun and it is moving towards the Sun at the speed of 10 kilometers per second.

35.64 pc
116.18 ly
-10 km/s
-0.112 arcsec/year
-0.073 arcsec/year

Spectral properties of ζ Lupi

ζ Lupi belongs to spectral class G8 and has a luminosity class of III corresponding to a giant star.


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

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

ζ Lupi star system properties

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

71.9 arcsec

Alternative designations of ζ Lupi

ζ Lupi
(zeta Lupi)
Wo 9512 A