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public LocationGreenwich, United Kingdom
Sunrise: 4:42 
Transit: 12:59 
Sunset: 21:17
sunny   (Daytime)   What's Visible Now?


Above the horizon.  Circumpolar today
Altitude: 4.5°   Azimuth: 337.6°   Direction: North-North-West

HR7784 is a multiple main-sequence star of spectral class A1 in the constellation of Cygnus.

HR7784 visual magnitude is 6.23. Because of its faintness, HR7784 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 HR7784

Finder chart HR7784 star
Simplified finder chart for HR7784.

HR7784 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 HR7784 are provided in the following table:

20h 20m 15s
+39° 24’ 11”
Image of HR7784 star
DSS2 image of HR7784. The red arrow shows the motion of HR7784 during the next 10000 years (-0.33 arcmin in Right Ascension and -3.67 arcmin in declination);

Key facts about HR7784


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


The red dot in the diagram below shows where HR7784 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR7784. Attribution: Richard Powell / CC BY-SA

HR7784 star system properties

HR7784 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 HR7784 double sysyem:

0.3 arcsec

Distance of HR7784 from the Sun and relative movement

HR7784 is distant 355.12 light years from the Sun and it is moving towards the Sun at the speed of 1 kilometers per second.

108.93 pc
355.12 ly
-1 km/s
-0.002 arcsec/year
-0.022 arcsec/year

Alternative designations of HR7784


Visibility of HR7784 from your location

HR7784 is circumpolar and transits at 02:32 UTC (altitude: 77.9°)