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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: 6:48  
clear_day Transit: 12:11  
SunsetSet: 17:34
sleep NighttimeWhat's Visible Now?
All Constellations » Cygnus » 


Altitude: 10.2°   Azimuth: 8.0°   Direction: North

HR7684 is a sub-giant star in the constellation of Cygnus.

HR7684 visual magnitude is 6.16. Because of its reltive faintness, HR7684 should be visible only from locations with dark skies, while it is not visible at all from skies affected by light pollution.

The proper motion of HR7684 is 0.011 arcsec per year in Right Ascension and 0.004 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR7684 star
DSS2 image of HR7684. The red arrow shows the motion of HR7684 during the next 10000 years (1.83 arcmin in Right Ascension and 0.67 arcmin in declination);

Key facts about HR7684


HR7684 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 10.2°
Azimuth: 8.0°
Direction: North

Celestial coordinates and finder chart of HR7684

HR7684 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 HR7684 are provided in the following table:

20h 04m 28s
+48° 13’ 46”

The simplified sky map below shows the position of HR7684 in the sky:

Finder chart HR7684 star
Simplified finder chart for HR7684.

Visibility of HR7684 from your location

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

HR7684 is circumpolar and transits at 09:33 UTC (altitude: 86.7°)

Distance of HR7684 from the Sun and relative movement

HR7684 is distant 579.04 light years from the Sun and it is moving towards the Sun at the speed of 14 kilometers per second.

177.62 pc
579.04 ly
-14 km/s
0.011 arcsec/year
0.004 arcsec/year

Spectral properties of HR7684

HR7684 belongs to spectral class A2 and has a luminosity class of IV corresponding to a sub-giant star.


The red dot in the diagram below shows where HR7684 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR7684. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR7684