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A Complete Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
SunriseRise: 7:03  
clear_day Transit: 12:12  
SunsetSet: 17:22
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All Constellations » Cygnus » 


Altitude: 11.1°   Azimuth: 324.9°   Direction: North-West

HR7911 is a multiple giant star in the constellation of Cygnus.

HR7911 visual magnitude is 6.06. Because of its reltive faintness, HR7911 should be visible only from locations with dark skyes, while it is not visible at all from skyes affected by light pollution.

The proper motion of HR7911 is 0.007 arcsec per year in Right Ascension and 0 arcsec per year in Declination and the associated displacement for the next 100000 years is represented with the red arrow.

Image of HR7911 star
DSS2 image of HR7911. The red arrow shows the motion of HR7911 during the next 100000 years (11.67 arcmin in Right Ascension and 0.00 arcmin in declination);

Key facts about HR7911


HR7911 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 11.1°
Azimuth: 324.9°
Direction: North-West

Celestial coordinates and finder chart of HR7911

HR7911 is situated north of the celestial equator, as such, it is more easily visible from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR7911 are provided in the following table:

20h 39m 33s
+40° 34’ 45”

The simplified sky map below shows the position of HR7911 in the sky:

Finder chart HR7911 star
Simplified finder chart for HR7911.

Visibility of HR7911 from your location

Location: Greenwich, United Kingdom edit_location_alt
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

HR7911 is circumpolar and transits at 10:36 UTC (altitude: 79.1°)

Distance of HR7911 from the Sun and relative movement

HR7911 is distant 898.07 light years from the Sun and it is moving towards the Sun at the speed of 15 kilometers per second.

275.48 pc
898.07 ly
-15 km/s
0.007 arcsec/year

Spectral properties of HR7911

HR7911 belongs to spectral class B6 and has a luminosity class of III corresponding to a giant star. HR7911 is also a Mn chemically peculiar star.


The red dot in the diagram below shows where HR7911 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR7911. Attribution: Richard Powell / CC BY-SA

HR7911 star system properties

HR7911 is a visual double star which can be observed with the help of large telescopes. The table below shows key information about the HR7911 double sysyem:

0.8 arcsec

Alternative designations of HR7911