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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
north SunriseRise: 7:43  
clear_day Transit: 11:47  
SunsetSet: 15:52 south
sleep NighttimeWhat's Visible Now?
All Constellations » Lupus » 

ξ1 Lupi (xi1 Lupi)

Altitude: -44.1°   Azimuth: 91.8°   Direction: East

ξ1 Lupi is a double main-sequence star in the constellation of Lupus.

ξ1 Lupi visual magnitude is 5.12. Because of its reltive faintness, ξ1 Lupi should be visible only from locations with dark skyes, while it is not visible at all from skyes affected by light pollution.

The table below summarizes the key facts about ξ1 Lupi:


ξ1 Lupi (xi1 Lupi) is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -44.1°
Azimuth: 91.8°
Direction: East

Celestial coordinates and finder chart of ξ1 Lupi

ξ1 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 ξ1 Lupi are provided in the following table:

15h 56m 53s
-33° 57’ 59”

The simplified sky map below shows the position of ξ1 Lupi in the sky:

Finder chart ξ1 Lupi (xi1 Lupi) star
Simplified finder chart for ξ1 Lupi (xi1 Lupi).

Visibility of ξ1 Lupi from your location

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

Today's ξ1 Lupi (xi1 Lupi) rise, transit and set times from Greenwich, United Kingdom edit_location_alt are the following (all times relative to the local timezone Europe/London):

Azimuth: 124.0°
Max altitude: 4.6°
Azimuth: 236.0°

Digitized Sky Survey image of ξ1 Lupi

The image below is a photograph of ξ1 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 ξ1 Lupi is 0.018 arcsec per year in Right Ascension and -0.042 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of ξ1 Lupi (xi1 Lupi) star
DSS2 image of ξ1 Lupi. The red arrow shows the motion of ξ1 Lupi during the next 10000 years (3.00 arcmin in Right Ascension and -7.00 arcmin in declination);

Distance of ξ1 Lupi from the Sun and relative movement

ξ1 Lupi is distant 199.39 light years from the Sun and it is moving towards the Sun at the speed of 10 kilometers per second.

61.16 pc
199.39 ly
-10 km/s
0.018 arcsec/year
-0.042 arcsec/year

Spectral properties of ξ1 Lupi

ξ1 Lupi belongs to spectral class A3 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where ξ1 Lupi is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of ξ1 Lupi. Attribution: Richard Powell / CC BY-SA

ξ1 Lupi star system properties

ξ1 Lupi is a visual double star which can be observed with the help of small or medium telescopes. The table below shows key information about the ξ1 Lupi double sysyem:

10.3 arcsec

Alternative designations of ξ1 Lupi

ξ1 Lupi
(xi1 Lupi)