31 Ursae Majoris

Above the horizon. Circumpolar today

Alt: 80.88° Az: 95.70° Direction: East

31 Ursae Majoris is a variable giant star of spectral class A3 in the constellation of Ursa Major.

31 Ursae Majoris visual magnitude is 5.27. Because of its faintness, 31 Ursae Majoris is visible to the naked eye only from locations with very dark skies, while it is not visible at all from skies affected by light pollution.

DSS2 image of 31 Ursae Majoris. The red arrow shows the motion of 31 Ursae Majoris during the next 10000 years (-0.50 arcmin in Right Ascension and 3.67 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 09h 57m 19s

Declination +49° 42’ 06”

Hour Angle 23h 03m 31s

Sideral Time 09h 00m 51s

J2000

Right Ascension 09h 55m 42s

Declination +49° 49’ 12”

Galactic Coordinates

Galactic Longitude 166.65°

Galactic Latitude 49.63°

Finder Chart

Simplified finder chart for 31 Ursae Majoris.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.27

Class Giant

Absolute magnitude 1.10

Spectral Type A3III

Color Index (B-V) 0.07

Temperature 9328K

The red dot in the diagram below shows where 31 Ursae Majoris is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 31 Ursae Majoris. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

31 Ursae Majoris is distant 222.53 light years from the Sun and it is moving towards the Sun at the speed of 6 kilometers per second.

Distance (parsec) 68.26

Distance (light year) 222.53

Radial Speed -6 km/s

Proper Motion RA -0.003 arcsec/y

Proper Motion Dec 0.022"/y

Alternative Designations

Flamsteed designation 31 Ursae Majoris

Henry Draper Catalogue HD85795

SAO Catalogue SAO27430

Hipparcos Catalogue HIP48682

Durchmusterung Catalogue BD+50 1698

FK5 Catalogue 2793

General Catalogue of Variable Stars SY UMa

Visibility from Your Location

31 Ursae Majoris is circumpolar and transits at 08:55 UTC (altitude: 88.2°)

Set Location

Other stars in Ursa Major