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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: 7:38  
clear_day Transit: 11:46  
SunsetSet: 15:54 south
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All Constellations » Ursa Major » 

Tania Australis - μ Ursae Majoris (mu Ursae Majoris)

Altitude: 35.3°   Azimuth: 294.5°   Direction: West-North-West

Tania Australis, also designated as μ Ursae Majoris (mu Ursae Majoris), is a variable hypergiant star in the constellation of Ursa Major.

Tania Australis visual magnitude is 3.05. Because of its moderate brightness, Tania Australis 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 Tania Australis:


Tania Australis - μ Ursae Majoris (mu Ursae Majoris) is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 35.3°
Azimuth: 294.5°
Direction: West-North-West

Celestial coordinates and finder chart of Tania Australis

Tania Australis 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 Tania Australis are provided in the following table:

10h 22m 19s
+41° 29’ 57”
Ursa Major

The simplified sky map below shows the position of Tania Australis in the sky:

Finder chart Tania Australis - μ Ursae Majoris (mu Ursae Majoris) star
Simplified finder chart for Tania Australis - μ Ursae Majoris (mu Ursae Majoris).

Visibility of Tania Australis from your location

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

Tania Australis - μ Ursae Majoris (mu Ursae Majoris) is circumpolar and transits at 05:50 UTC (altitude: 80.0°)

Digitized Sky Survey image of Tania Australis

The image below is a photograph of Tania Australis 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 Tania Australis is -0.082 arcsec per year in Right Ascension and 0.035 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of Tania Australis - μ Ursae Majoris (mu Ursae Majoris) star
DSS2 image of Tania Australis. The red arrow shows the motion of Tania Australis during the next 10000 years (-13.67 arcmin in Right Ascension and 5.83 arcmin in declination);

Distance of Tania Australis from the Sun and relative movement

Tania Australis is distant 248.67 light years from the Sun and it is moving towards the Sun at the speed of 21 kilometers per second.

76.28 pc
248.67 ly
-21 km/s
-0.082 arcsec/year
0.035 arcsec/year

Spectral properties of Tania Australis

Tania Australis belongs to spectral class M0 and has a luminosity class of III corresponding to a hypergiant star.


The red dot in the diagram below shows where Tania Australis is situated in the Hertzsprung–Russell diagram.

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

Alternative designations of Tania Australis

Tania Australis
μ Ursae Majoris
(mu Ursae Majoris)
34 Ursae Majoris