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: 7:04  
clear_day Transit: 12:47  
SunsetSet: 18:30 south
sunny DaytimeWhat's Visible Now
All Constellations » Ursa Major » 

73 Ursae Majoris

Altitude: 73.2°   Azimuth: 295.4°   Direction: West-North-West

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

73 Ursae Majoris visual magnitude is 5.7. Because of its reltive faintness, 73 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 73 Ursae Majoris:


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

Altitude: 73.2°
Azimuth: 295.4°
Direction: West-North-West

Celestial coordinates and finder chart of 73 Ursae Majoris

73 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 73 Ursae Majoris are provided in the following table:

12h 27m 35s
+55° 42’ 46”
Ursa Major

The simplified sky map below shows the position of 73 Ursae Majoris in the sky:

Finder chart 73 Ursae Majoris star
Simplified finder chart for 73 Ursae Majoris.

Visibility of 73 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

73 Ursae Majoris is circumpolar and transits at 11:35 UTC (altitude: 85.8°)

Digitized Sky Survey image of 73 Ursae Majoris

The image below is a photograph of 73 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 73 Ursae Majoris is -0.021 arcsec per year in Right Ascension and -0.012 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of 73 Ursae Majoris star
DSS2 image of 73 Ursae Majoris. The red arrow shows the motion of 73 Ursae Majoris during the next 10000 years (-3.50 arcmin in Right Ascension and -2.00 arcmin in declination);

Distance of 73 Ursae Majoris from the Sun and relative movement

73 Ursae Majoris is distant 438.76 light years from the Sun and it is moving far from the Sun at the speed of 17 kilometers per second.

134.59 pc
438.76 ly
17 km/s
-0.021 arcsec/year
-0.012 arcsec/year

Spectral properties of 73 Ursae Majoris

73 Ursae Majoris belongs to spectral class M2 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where 73 Ursae Majoris is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 73 Ursae Majoris. Attribution: Richard Powell / CC BY-SA

Alternative designations of 73 Ursae Majoris

73 Ursae Majoris