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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: 7:40  
clear_day Transit: 11:47  
SunsetSet: 15:53 south
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All Constellations » Ursa Major » 

51 Ursae Majoris

Altitude: 74.8°   Azimuth: 213.9°   Direction: South-West

51 Ursae Majoris is a multiple giant star in the constellation of Ursa Major.

51 Ursae Majoris visual magnitude is 6. Because of its reltive faintness, 51 Ursae Majoris 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 51 Ursae Majoris:


51 Ursae Majoris is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 74.8°
Azimuth: 213.9°
Direction: South-West

Celestial coordinates and finder chart of 51 Ursae Majoris

51 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 51 Ursae Majoris are provided in the following table:

11h 04m 31s
+38° 14’ 29”
Ursa Major

The simplified sky map below shows the position of 51 Ursae Majoris in the sky:

Finder chart 51 Ursae Majoris star
Simplified finder chart for 51 Ursae Majoris.

Visibility of 51 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 51 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: 51.8°
Max altitude: 76.8°
Azimuth: 308.2°

Digitized Sky Survey image of 51 Ursae Majoris

The image below is a photograph of 51 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 51 Ursae Majoris is -0.064 arcsec per year in Right Ascension and -0.003 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of 51 Ursae Majoris star
DSS2 image of 51 Ursae Majoris. The red arrow shows the motion of 51 Ursae Majoris during the next 10000 years (-10.67 arcmin in Right Ascension and -0.50 arcmin in declination);

Distance of 51 Ursae Majoris from the Sun and relative movement

51 Ursae Majoris is distant 262.69 light years from the Sun and it is moving far from the Sun at the speed of 7 kilometers per second.

80.58 pc
262.69 ly
7 km/s
-0.064 arcsec/year
-0.003 arcsec/year

Spectral properties of 51 Ursae Majoris

51 Ursae Majoris belongs to spectral class A3 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where 51 Ursae Majoris is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 51 Ursae Majoris. Attribution: Richard Powell / CC BY-SA

51 Ursae Majoris star system properties

51 Ursae Majoris is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the 51 Ursae Majoris double sysyem:

8.4 arcsec

Alternative designations of 51 Ursae Majoris

51 Ursae Majoris