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:

Color of ζ Lupi ⬤

Magnitude of ζ Lupi 3.41

Class Giant

VISIBILITY RIGHT NOW 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:

Right Ascension J2000 15h 12m 17s

Declination J2000 -52° 05’ 57”

Galactic Longitude 323.76°

Galactic Latitude 4.98°

Constellation Lupus

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

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.

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.

Distance (parsec) 35.64 pc

Distance (light year) 116.18 ly

Heliocentric radial velocity -10 km/s

Proper Motion RA -0.112 arcsec/year

Proper Motion Dec -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.

Absolute magnitude 0.65

Spectral Type G8III

Color Index (B-V) 0.92

Temperature of ζ Lupi 4943K

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

Main star magnitude 3.41

Secondary star magnitude 7.01

Magnitude difference 3.6

Separation 71.9 arcsec

Alternative designations of ζ Lupi

Bayer designation ζ Lupi
(zeta Lupi)

Henry Draper Catalogue HD134505

SAO Catalogue SAO242304

Hipparcos Catalogue HIP74395

Durchmusterung Catalogue CD-51 8830

Gliese Catalogue Wo 9512 A

FK5 Catalogue 558

In Evidence

Other stars in Lupus