HR4486

Above the horizon. Circumpolar today

Alt: 10.67° Az: 336.64° Direction: North-North-West

HR4486 is a multiple hypergiant star of spectral class G0 in the constellation of Ursa Major.

HR4486 visual magnitude is 6.44. Because of its faintness, HR4486 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 HR4486. The red arrow shows the motion of HR4486 during the next 1000 years (-9.90 arcmin in Right Ascension and 0.43 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 11h 40m 05s

Declination +44° 58’ 04”

Hour Angle 09h 46m 18s

Sidereal Time 21h 26m 24s

J2000

Right Ascension 11h 38m 44s

Declination +45° 06’ 30”

Galactic Coordinates

Galactic Longitude 157.05°

Galactic Latitude 66.91°

Finder Chart

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Finder chart for HR4486.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 6.44

Class Hypergiant

Absolute magnitude 4.60

Spectral Type G0V

Color Index (B-V) 0.56

Temperature 6129K

The red dot in the diagram below shows where HR4486 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR4486. Attribution: Richard Powell / CC BY-SA

Star System Properties

HR4486 is a visual double star which can be observed with the help of small or medium telescopes. The table below shows key information about the HR4486 double sysyem:

Main star magnitude 6.44

Secondary star magnitude 8.34

Magnitude difference 1.9

Separation 9.4 arcsec

Distance, Radial Speed, Proper Motion

HR4486 is distant 75.92 light years from the Sun and it is moving towards the Sun at the speed of 18 kilometers per second.

Distance (parsec) 23.29

Distance (light year) 75.92

Radial Speed -18 km/s

Proper Motion RA -0.594 arcsec/y

Proper Motion Dec 0.026"/y

Alternative Designations

Henry Draper Catalogue HD101177

SAO Catalogue SAO43841

Hipparcos Catalogue HIP56809

Durchmusterung Catalogue BD+45 1947

Gliese Catalogue Gl 433.2A

Aitken Double Star Catalogue ADS8250

Visibility from Your Location

HR4486 is circumpolar and transits at 20:08 UTC (altitude: 83.5°)

Set Location

Other stars in Ursa Major