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public LocationGreenwich, UK
Sunrise: 4:59 
Transit: 13:04 
Sunset: 21:08
sunny   (Daytime)   What's Visible Now?
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Above the horizon.  Circumpolar today
Alt: 12.29°   Az: 5.51°   Direction: North

HR8040 is a multiple main-sequence star of spectral class B5 in the constellation of Cygnus.

HR8040 visual magnitude is 5.61. Because of its faintness, HR8040 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.

HR8040 is situated north of the celestial equator, as such, it is more easily visible from the northern hemisphere.

Image of HR8040 star
DSS2 image of HR8040. The red arrow shows the motion of HR8040 during the next 10000 years (2.17 arcmin in Right Ascension and 1.67 arcmin in declination);

Celestial Coordinates


20h 59m 17s
+50° 33’ 30”
12h 33m 59s


20h 58m 30s
+50° 27’ 43”

Galactic Coordinates


Finder Chart

Finder chart HR8040 star
Simplified finder chart for HR8040.

Magnitude, Color, Spectral Class



The red dot in the diagram below shows where HR8040 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR8040. Attribution: Richard Powell / CC BY-SA

Star System Properties

HR8040 is a visual double star which can be observed with the help of medium or large telescopes. The table below shows key information about the HR8040 double sysyem:

1.8 arcsec

Distance, Radial Speed, Proper Motion

HR8040 is distant 1,263.57 light years from the Sun and it is moving towards the Sun at the speed of 21 kilometers per second.

387.60 pc
1,263.57 ly
-21 km/s
0.013 arcsec/y
0.01 "/y

Alternative Designations


Visibility from Your Location

HR8040 is circumpolar and transits at 01:29 UTC (altitude: 89.1°)