HR4439

Above the horizon. Circumpolar today

Alt: 56.79° Az: 49.94° Direction: South-South-West

HR4439 is a double main-sequence star of spectral class F8 in the constellation of Ursa Major.

HR4439 visual magnitude is 5.48. Because of its faintness, HR4439 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 HR4439. The red arrow shows the motion of HR4439 during the next 10000 years (0.33 arcmin in Right Ascension and -11.50 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 11h 33m 46s

Declination +60° 56’ 29”

Hour Angle 20h 01m 19s

Sidereal Time 07h 35m 05s

J2000

Right Ascension 11h 32m 20s

Declination +61° 04’ 57”

Galactic Coordinates

Galactic Longitude 138.9°

Galactic Latitude 53.52°

Finder Chart

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Finder chart for HR4439.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.48

Class Main-sequence

Absolute magnitude 3.28

Spectral Type F8V

Color Index (B-V) 0.5

Temperature 6389K

The red dot in the diagram below shows where HR4439 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR4439. Attribution: Richard Powell / CC BY-SA

Star System Properties

HR4439 is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the HR4439 double sysyem:

Main star magnitude 5.48

Secondary star magnitude 6.88

Magnitude difference 1.4

Separation 0.5 arcsec

Distance, Radial Speed, Proper Motion

HR4439 is distant 89.71 light years from the Sun and it is moving towards the Sun at the speed of 46 kilometers per second.

Distance (parsec) 27.52

Distance (light year) 89.71

Radial Speed -46 km/s

Proper Motion RA 0.002 arcsec/y

Proper Motion Dec -0.069"/y

Alternative Designations

Henry Draper Catalogue HD100203

SAO Catalogue SAO15542

Hipparcos Catalogue HIP56290

Durchmusterung Catalogue BD+61 1246

Gliese Catalogue Gl 431.1A

Aitken Double Star Catalogue ADS8197

Visibility from Your Location

HR4439 is circumpolar and transits at 17:25 UTC (altitude: 80.5°)

Set Location

Other stars in Ursa Major