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Tania Australis - μ Ursae Majoris (mu Ursae Majoris)

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:

Color of Tania Australis ⬤

Magnitude of Tania Australis 3.05

Class Hypergiant

VISIBILITY RIGHT NOW Tania Australis - μ Ursae Majoris (mu Ursae Majoris) is above the horizon from Greenwich, United Kingdom edit_location_alt. Altitude: 52°.

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:

Right Ascension J2000 10h 22m 19s

Declination J2000 +41° 29’ 57”

Galactic Longitude 177.9°

Galactic Latitude 56.36°

Constellation 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 17:38 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.

Distance (parsec) 76.28 pc

Distance (light year) 248.67 ly

Heliocentric radial velocity -21 km/s

Proper Motion RA -0.082 arcsec/year

Proper Motion Dec 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.

Absolute magnitude -1.36

Spectral Type M0III

Color Index (B-V) 1.59

Temperature of Tania Australis 3663K

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

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

Alternative designations of Tania Australis

Proper Name Tania Australis

Bayer designation μ Ursae Majoris
(mu Ursae Majoris)

Flamsteed designation 34 Ursae Majoris

Henry Draper Catalogue HD89758

SAO Catalogue SAO43310

Hipparcos Catalogue HIP50801

Durchmusterung Catalogue BD+42 2115

FK5 Catalogue 386

General Catalogue of Variable Stars 4829

In Evidence

Other stars in Ursa Major