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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: 7:37  
clear_day Transit: 11:46  
SunsetSet: 15:55 south
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All Constellations » Ursa Major » 

ξ Ursae Majoris (xi Ursae Majoris)

Altitude: -3.3°   Azimuth: 336.0°   Direction: North-North-West

ξ Ursae Majoris is a variable and multiple hypergiant star in the constellation of Ursa Major.

ξ Ursae Majoris visual magnitude is 4.87. Because of its moderate brightness, ξ Ursae Majoris 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 ξ Ursae Majoris:


ξ Ursae Majoris (xi Ursae Majoris) is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -3.3°
Azimuth: 336.0°
Direction: North-North-West

Celestial coordinates and finder chart of ξ Ursae Majoris

ξ Ursae Majoris is situated north of the celestial equator, as such, it is more easily visible from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of ξ Ursae Majoris are provided in the following table:

11h 18m 10s
+31° 31’ 45”
Ursa Major

The simplified sky map below shows the position of ξ Ursae Majoris in the sky:

Finder chart ξ Ursae Majoris (xi Ursae Majoris) star
Simplified finder chart for ξ Ursae Majoris (xi Ursae Majoris).

Visibility of ξ Ursae Majoris 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 ξ Ursae Majoris (xi Ursae Majoris) 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: 58.5°
Max altitude: 70.0°
Azimuth: 301.5°

Digitized Sky Survey image of ξ Ursae Majoris

The image below is a photograph of ξ Ursae Majoris 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 ξ Ursae Majoris is -0.432 arcsec per year in Right Ascension and -0.586 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of ξ Ursae Majoris (xi Ursae Majoris) star
DSS2 image of ξ Ursae Majoris. The red arrow shows the motion of ξ Ursae Majoris during the next 1000 years (-7.20 arcmin in Right Ascension and -9.77 arcmin in declination);

Distance of ξ Ursae Majoris from the Sun and relative movement

ξ Ursae Majoris is distant 33.96 light years from the Sun and it is moving towards the Sun at the speed of 16 kilometers per second.

10.42 pc
33.96 ly
-16 km/s
-0.432 arcsec/year
-0.586 arcsec/year

Spectral properties of ξ Ursae Majoris

ξ Ursae Majoris belongs to spectral class G0 and has a luminosity class of V corresponding to a hypergiant star.


The red dot in the diagram below shows where ξ Ursae Majoris is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of ξ Ursae Majoris. Attribution: Richard Powell / CC BY-SA

ξ Ursae Majoris star system properties

ξ Ursae Majoris 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 ξ Ursae Majoris double sysyem:

3.1 arcsec

Alternative designations of ξ Ursae Majoris

ξ Ursae Majoris
(xi Ursae Majoris)
53 Ursae Majoris
Gl 423 B