σ1 Ursae Majoris (sigma1 Ursae Majoris)

Above the horizon. Circumpolar today

Alt: 40.17° Az: 330.51° Direction: South-West

σ1 Ursae Majoris is a giant star of spectral class K5 in the constellation of Ursa Major.

σ1 Ursae Majoris visual magnitude is 5.14. Because of its faintness, σ1 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.

Image of σ1 Ursae Majoris (sigma1 Ursae Majoris) star

DSS2 image of σ1 Ursae Majoris. The red arrow shows the motion of σ1 Ursae Majoris during the next 10000 years (-3.00 arcmin in Right Ascension and -6.33 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 09h 10m 35s

Declination +66° 46’ 08”

Hour Angle 07h 10m 01s

Sidereal Time 16h 20m 36s

J2000

Right Ascension 09h 08m 23s

Declination +66° 52’ 23”

Galactic Coordinates

Galactic Longitude 147.27°

Galactic Latitude 38.03°

Finder Chart

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Finder chart for σ1 Ursae Majoris (sigma1 Ursae Majoris).

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.14

Class Giant

Absolute magnitude -0.78

Spectral Type K5III

Color Index (B-V) 1.51

Temperature 3779K

The red dot in the diagram below shows where σ1 Ursae Majoris is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of σ1 Ursae Majoris. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

σ1 Ursae Majoris is distant 498.47 light years from the Sun and it is moving far from the Sun at the speed of 15 kilometers per second.

Distance (parsec) 152.91

Distance (light year) 498.47

Radial Speed 15 km/s

Proper Motion RA -0.018 arcsec/y

Proper Motion Dec -0.038"/y

Alternative Designations

Bayer designation σ1 Ursae Majoris
(sigma1 Ursae Majoris)

Flamsteed designation 11 Ursae Majoris

Henry Draper Catalogue HD77800

SAO Catalogue SAO14769

Hipparcos Catalogue HIP44857

Durchmusterung Catalogue BD+67 573

Visibility from Your Location

σ1 Ursae Majoris (sigma1 Ursae Majoris) is circumpolar and transits at 15:06 UTC (altitude: 74.7°)

Set Location

Other stars in Ursa Major