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: 4:51  
clear_day Transit: 12:56  
SunsetSet: 21:00 south
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All Constellations » Lupus » 

δ Lupi (delta Lupi)

δ Lupi is a variable sub-giant star in the constellation of Lupus.

δ Lupi visual magnitude is 3.22. Because of its moderate brightness, δ 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 δ Lupi:

δ Lupi (delta Lupi) is below the horizon from Greenwich, United Kingdom edit_location_alt.

Celestial coordinates and finder chart of δ Lupi

δ 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 δ Lupi are provided in the following table:

15h 21m 22s
-40° 38’ 51”

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

Finder chart δ Lupi (delta Lupi) star
Simplified finder chart for δ Lupi (delta Lupi).

Visibility of δ Lupi from your location

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

δ Lupi (delta Lupi) is currently not visible from Greenwich, United Kingdom edit_location_alt

Digitized Sky Survey image of δ Lupi

The image below is a photograph of δ 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 δ Lupi is -0.015 arcsec per year in Right Ascension and -0.026 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of δ Lupi (delta Lupi) star
DSS2 image of δ Lupi. The red arrow shows the motion of δ Lupi during the next 10000 years (-2.50 arcmin in Right Ascension and -4.33 arcmin in declination);

Distance of δ Lupi from the Sun and relative movement

δ Lupi is distant 510.17 light years from the Sun

156.49 pc
510.17 ly
-0.015 arcsec/year
-0.026 arcsec/year

Spectral properties of δ Lupi

δ Lupi belongs to spectral class B1 and has a luminosity class of IV corresponding to a sub-giant star.


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

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

Alternative designations of δ Lupi

δ Lupi
(delta Lupi)