HR4950

Above the horizon. Circumpolar today

Alt: 38.27° Az: 344.49° Direction: North-North-West

HR4950 is a multiple hypergiant star of spectral class F0 in the constellation of Ursa Minor.

HR4950 visual magnitude is 6.31. Because of its faintness, HR4950 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 HR4950. The red arrow shows the motion of HR4950 during the next 10000 years (-3.17 arcmin in Right Ascension and 3.33 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 13h 05m 36s

Declination +72° 53’ 22”

Hour Angle 08h 57m 51s

Sidereal Time 22h 03m 28s

J2000

Right Ascension 13h 04m 49s

Declination +73° 01’ 31”

Galactic Coordinates

Galactic Longitude 121.57°

Galactic Latitude 44.07°

Finder Chart

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Finder chart for HR4950.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 6.31

Class Hypergiant

Absolute magnitude 0.89

Spectral Type F0V

Color Index (B-V)

Temperature 10125K

The red dot in the diagram below shows where HR4950 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR4950. Attribution: Richard Powell / CC BY-SA

Star System Properties

HR4950 is a visual double star which can be observed with the help of large telescopes. The table below shows key information about the HR4950 double sysyem:

Main star magnitude 6.31

Secondary star magnitude 8.31

Magnitude difference 2

Separation 1.3 arcsec

Distance, Radial Speed, Proper Motion

HR4950 is distant 396.11 light years from the Sun and it is moving towards the Sun at the speed of 16 kilometers per second.

Distance (parsec) 121.51

Distance (light year) 396.11

Radial Speed -16 km/s

Proper Motion RA -0.019 arcsec/y

Proper Motion Dec 0.02"/y

Alternative Designations

Henry Draper Catalogue HD113889

SAO Catalogue SAO7741

Hipparcos Catalogue HIP63822

Durchmusterung Catalogue BD+73 583

Aitken Double Star Catalogue ADS8772

Visibility from Your Location

HR4950 is circumpolar and transits at 20:31 UTC (altitude: 68.6°)

Set Location

Other stars in Ursa Minor