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public LocationGreenwich, UK
Sunrise: 5:11 
Transit: 13:06 
Sunset: 21:00
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All Constellations » Ursa Major » 

ω Ursae Majoris (omega Ursae Majoris)

Above the horizon.  Circumpolar today
Alt: 27.37°   Az: 54.26°   Direction: North-East

ω Ursae Majoris is a main-sequence star of spectral class A1 in the constellation of Ursa Major.

ω Ursae Majoris visual magnitude is 4.71. Because of its moderate brightness, ω Ursae Majoris is easily visible to the naked eye from locations with dark skies, while it might be barely visible, or not visible at all, from light-polluted skies.

Image of ω Ursae Majoris (omega Ursae Majoris) star
DSS2 image of ω Ursae Majoris. The red arrow shows the motion of ω Ursae Majoris during the next 10000 years (7.50 arcmin in Right Ascension and -3.50 arcmin in declination);

Celestial Coordinates


10h 55m 22s
+43° 03’ 31”
17h 22m 19s
04h 17m 42s


10h 53m 58s
+43° 11’ 23”

Galactic Coordinates


Finder Chart

Finder chart ω Ursae Majoris (omega Ursae Majoris) star
Simplified finder chart for ω Ursae Majoris (omega Ursae Majoris).

Magnitude, Color, Spectral Class



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

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

Distance, Radial Speed, Proper Motion

ω Ursae Majoris is distant 266.78 light years from the Sun and it is moving towards the Sun at the speed of 17 kilometers per second.

-17 km/s
0.045 arcsec/y

Alternative Designations

ω Ursae Majoris
(omega Ursae Majoris)
45 Ursae Majoris

Visibility from Your Location

ω Ursae Majoris (omega Ursae Majoris) is circumpolar and transits at 14:51 UTC (altitude: 81.6°)