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public  Greenwich, UK Greenwich, UK  ⓘ
TimezoneEurope/London
Sunrise: 5:12 
Transit: 12:56 
Sunset: 20:41
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All Constellations » Ursa Major » 

HR3911

Above the horizon.  Circumpolar today
Alt: 31.65°   Az: 28.92°   Direction: North-North-East

HR3911 is a double hypergiant star of spectral class K0 in the constellation of Ursa Major.

HR3911 visual magnitude is 6.27. Because of its faintness, HR3911 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 HR3911 star
DSS2 image of HR3911. The red arrow shows the motion of HR3911 during the next 100000 years (15.00 arcmin in Right Ascension and -3.33 arcmin in declination);

Celestial Coordinates

Apparent

09h 56m 52s
+60° 59’ 42”
15h 52m 24s
01h 49m 17s

J2000

09h 55m 03s
+61° 06’ 57”

Galactic Coordinates

151.35°
45.07°

Finder Chart

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Finder chart for HR3911.

Magnitude, Color, Spectral Class

6.27
Hypergiant

0.89
K0
4626K

The red dot in the diagram below shows where HR3911 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR3911. Attribution: Richard Powell / CC BY-SA

Star System Properties

HR3911 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 HR3911 double sysyem:

6.27
13.07
6.8
12.2 arcsec

Distance, Radial Speed, Proper Motion

HR3911 is distant 388.56 light years from the Sun and it is moving towards the Sun at the speed of 11 kilometers per second.

119.19
388.56
-11 km/s
0.009 arcsec/y
-0.002"/y

Alternative Designations

SAO15023
SAO15023

Visibility from Your Location

HR3911 is circumpolar and transits at 18:29 UTC (altitude: 80.5°)