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public LocationGreenwich, UK
TimezoneEurope/London
Sunrise: 4:43 
Transit: 13:01 
Sunset: 21:18
sunny   (Daytime)   What's Visible Now?
All Constellations » Ursa Major » 

HR4439

Above the horizon.  Circumpolar today
Altitude: 26.3°   Azimuth: 18.7°   Direction: North-North-East

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.

Celestial coordinates and finder chart of HR4439

Finder chart HR4439 star
Simplified finder chart for HR4439.

HR4439 is situated close to the northern celestial pole and, as such, it is visible for most part of the year from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR4439 are provided in the following table:

11h 32m 20s
+61° 04’ 57”
138.9°
53.52°
Ursa Major
Image of HR4439 star
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);

Key facts about HR4439

5.48
Main-sequence

and has a luminosity class of V corresponding to a main-sequence star.

3.28
F8V
6389K

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

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

HR4439 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:

5.48
6.88
1.4
0.5 arcsec

Distance of HR4439 from the Sun and relative movement

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.

27.52 pc
89.71 ly
-46 km/s
0.002 arcsec/year
-0.069 arcsec/year

Alternative designations of HR4439

SAO15542
SAO15542
Gl 431.1A

Visibility of HR4439 from your location

HR4439 is circumpolar and transits at 17:15 UTC (altitude: 80.4°)